We investigate hidden charm pentaquark states using an off-shell coupled-channel formalism involving heavy meson and singly heavy baryon scattering. Our approach utilizes an effective Lagrangian to construct the kernel amplitudes, which respect both heavy quark symmetry and hidden local symmetry. After solving the coupled integral equations, we obtain the transition amplitudes for 𝐽/𝜓⁢𝑁 scattering

We revisit the computation of the beta function in the two-dimensional ℂℙ⁡(1) sigma model. We show that in different schemes, different diagrams are responsible for the running, such as momentum-independent tadpoles or even UV-finite bubble diagrams. We also comment on the relation between the beta functions and the energy dependence of scattering amplitudes.

We propose an extension of the color-kinematics duality for nonlinear sigma models with nonymmetric cosets. The role of color is replaced with curvatures in field space. The duality between curvature and kinematics allows for a new double copy: the double copy of the nonlinear sigma model for nonsymmetric cosets is the general Galileon theory. We provide evidence for this new double copy of geometry

The gravitational form factors (GFFs) of pions are calculated from a top-down holographic quantum chromodynamics (QCD) approach with momentum transfer dependence for the first time. It is important because the GFFs of hadrons have information on the internal stress distribution that may provide insight into the mechanism of how QCD forms hadrons. The forward limit value of this GFFs, i.e., the D-term

Using the nonrelativistic approximation in the curved-space Dirac equation, the analog of the Pauli equation is derived for a weak gravitational field with a gauge fixing condition related to the synchronous gauge, in the presence of an electromagnetic field. Different from the previous works, which were employing either the exact or conventional Foldy-Wouthuysen transformations, here we perform calculations

The second-order coherence of light is a widely recognized physical quantity used to assess the quantum characteristics of light, and its properties have been extensively investigated in the field of quantum optics. Recently, it has been proposed that second-order coherence can be utilized as an indicator of quantum entanglement. In this study, we evaluated the second-order coherence in the context

We investigate the properties of postmerger remnants of binary neutron star mergers in the framework of Damour–Esposito-Farese-type scalar-tensor theory of gravity with a massive scalar field by numerical relativity simulation. It is found that the threshold mass for prompt collapse is raised in the presence of the excited scalar field. Our simulation results also suggest the existence of a long-lived

We generalize the existing works on the way (generalized) Lemaître-Tolman-Bondi (LTB) models can be embedded into polymerized spherically symmetric models in several aspects. We reexamine such an embedding at the classical level and show that a suitable LTB condition can only be treated as a gauge fixing in the nonmarginally bound case, while in the marginally bound case, it must be considered as an

Based on modifications inspired from loop quantum gravity (LQG), spherically symmetric models have recently been explored to understand the resolution of classical singularities and the fate of the spacetime beyond. While such phenomenological studies have provided useful insights, questions remain on whether such models exhibit some of the desired properties such as consistent LTB conditions, covariance

We discuss the coupling of photon spin with rotation in connection with a recent proposal of Fedderke et al. [M. A. Fedderke, R. Harnik, D. E. Kaplan, S. Posen, S. Rajendran, F. Serra, and V. P. Yakovlev, A precision gyroscope from the spin of light, arXiv:2406.16178.] regarding a precision gyroscope based on the intrinsic spin of light. To this end, we analyze the propagation of electromagnetic radiation

The cosmic microwave background (CMB) lensing power spectrum is a powerful probe of the late-time Universe, encoding valuable information about cosmological parameters such as the sum of neutrino masses and dark energy equation of state. However, the presence of anisotropic cosmic birefringence can bias the reconstructed CMB lensing power spectrum using CMB polarization maps, particularly at small

We construct a hybrid-inflation model where the inflaton potential is generated radiatively, as gauge symmetries guarantee it to be accidentally flat at tree level. The model can be regarded as a small-field version of natural inflation, with inflation ending when the mass of a second scalar, the waterfall field, turns tachyonic. This provides a minimal, robust realization of hybrid inflation, which

Dark matter (DM) constitutes the predominant portion of matter in our Universe. Despite compelling evidence, the precise characteristics of DM remain elusive. Among the leading DM candidates are weakly interacting massive particles, which may clump into steep concentrations around the central black holes of galaxies. However, DM profiles of the resulting dense spikes remain uncertain. Here we employ

We present a stacked lensing analysis of 96 galaxy clusters selected by the thermal Sunyaev-Zel’dovich (SZ) effect in maps of the cosmic microwave background (CMB). We select foreground galaxy clusters with a 5⁢𝜎-level SZ threshold in CMB observations from the Atacama Cosmology Telescope, while we define background source galaxies for the lensing analysis with secure photometric redshift cuts in Year

We employ first-principles quantum field theoretical methods to investigate the longitudinal and transverse electrical conductivities of a strongly magnetized hot quantum electrodynamics (QED) plasma at the leading order in coupling. The analysis employs the fermion damping rate in the Landau-level representation, calculated with full kinematics and exact amplitudes of one-to-two and two-to-one QED

We describe a novel class of quantum mechanical particle oscillations in both relativistic and nonrelativistic systems based on 𝒫⁢𝒯 symmetry and 𝒯2=−1 (relevant for fermions), where 𝒫 is parity and 𝒯 is time reversal. The Hamiltonians are chosen at the outset to be self-adjoint with respect to a 𝒫⁢𝒯 inner product. The quantum mechanical time evolution is based on a modified 𝒞⁢𝒫⁢𝒯 inner product

We present a calculation of the vector-isovector timelike form factors of the pion and the kaon using lattice quantum chromodynamics. We calculate two-point correlation functions with 𝑚𝜋∼280  MeV, extracting both the finite-volume spectrum and matrix elements for these states created from the vacuum by a vector current. After determining the coupled-channel 𝜋⁢𝜋,𝐾⁢¯𝐾 scattering amplitudes, we

We consider three-dimensional (3D) lattice SU⁡(𝑁𝑐) gauge Higgs theories with multicomponent (𝑁𝑓>1) degenerate scalar fields and 𝑈⁡(𝑁𝑓) global symmetry, focusing on systems with 𝑁𝑐=2, to identify critical behaviors that can be effectively described by the corresponding 3D SU⁡(𝑁𝑐) gauge Higgs field theory. The field-theoretical analysis of the RG flow allows one to identify a stable charged

In this work, we investigate the resonance production in Λ+𝑐→𝛾⁢𝜋+⁢Λ decay through the triangle singularity (TS) mechanism, within an effective Lagrangian approach. We find that the appropriate loop decay process could develop a triangle singularity in the invariant mass 𝑀𝜋⁢Λ around 1.35 GeV, with the shape depending on the quantum numbers of Σ* states that couple to the final 𝜋⁢Λ system. Especially

We investigate the thermodynamics and phase structure of 𝑆⁢𝑈⁡(3) Yang-Mills theory on 𝕋2×ℝ2 in Euclidean spacetime in an effective-model approach. The model incorporates two Polyakov loops along two compactified directions as dynamical variables, and is constructed to reproduce thermodynamics on 𝕋2×ℝ2 measured on the lattice. The model analysis indicates the existence of a novel first-order phase

We refine our previous calculation of multipole amplitude 𝐸0+ for pion photoproduction process, 𝛾⁢𝑁→𝜋⁢𝑁. The treatment of final-state interactions is based upon an earlier analysis of pion-nucleon scattering within Hamiltonian effective field theory, supplemented by incorporating contributions from the 𝑁*⁡(1650) and the 𝐾⁢Λ coupled channel. The contribution from the bare state corresponding

The conventional wisdom in dealing with electromagnetic transition between heavy quarkonia is the multipole expansion, when the emitted photon has a typical energy of order quarkonium binding energy. Nevertheless, in the case when the energy carried by the photon is of order typical heavy quark momentum, the multipole expansion doctrine is expected to break down. In this work, we apply the “hard-scattering”

We rigorously prove that, in any relativistic kinetic theory whose nonhydrodynamic sector has a finite gap, the Taylor series of all hydrodynamic dispersion relations has a finite radius of convergence. Furthermore, we prove that, for shear waves, such radius of convergence cannot be smaller than 1/2 times the gap size. Finally, we prove that the nonhydrodynamic sector is gapped whenever the total

Using a data sample of 𝑒+⁢𝑒− collisions corresponding to an integrated luminosity of 7.93  fb−1 collected with the BESIII detector at the center-of-mass energy 3.773 GeV, we perform the first amplitude analysis of the decay 𝐷+→𝐾0𝑆⁢𝐾0𝑆⁢𝜋+. The absolute branching fraction of 𝐷+→𝐾0𝑆⁢𝐾0𝑆⁢𝜋+ is measured to be (2.97±0.0⁢9stat±0.0⁢5syst)×10−3. The dominant intermediate process is 𝐷+→𝐾0𝑆⁢𝐾*⁢(892)+

In this work, the Coulomb effects (Coulomb correlations) in 𝜋+⁢𝜋− pairs produced in p+Ni collisions at 24  GeV/𝑐, are studied using experimental 𝜋+⁢𝜋− pair distributions in 𝑄, the relative momentum in the pair center-of-mass system (c.m.s.), and its projections 𝑄𝐿 (longitudinal component) and 𝑄𝑡 (transverse component) relative to the pair direction in the laboratory system (LS). The major

We report an improved measurement of the valence 𝑢 and 𝑑 quark distributions from the forward-backward asymmetry in the Drell-Yan process using 8.6  fb−1 of data collected with the D0 detector in 𝑝⁢¯𝑝 collisions at √𝑠=1.96. This analysis provides the values of new structure parameters that are directly related to the valence up and down quark distributions in the proton. In other experimental

Gravitational waves from inspiraling binary neutron stars provide unique access to ultradense nuclear matter and offer the ability to constrain the currently unknown neutron star equation-of-state through tidal measurements. This, however, requires the availability of accurate and efficient tidal waveform models. In this paper we present phenomgsf, a new phenomenological tidal phase model for the inspiral

We study the effect of adding an interaction in the 𝐺3 term of Horndeski theory, where the propagation of gravitational waves is not modified. We derive the background and perturbation equations of motion from the action. We also derive the no-ghost and Laplacian instability conditions for tensor modes and scalar mode propagation. Then we study the evolution of the matter perturbation in the quasistatic

Physical systems in real life are inextricably linked to their surroundings and never completely separated from them. Truly closed systems do not exist. The phenomenon of decoherence, which is brought about by the interaction with the environment, removes the relative phase of quantum states in superposition and makes them incoherent. In neutrino physics, decoherence, although extensively studied has

We present a class of supersymmetric (SUSY) GUT models that can explain the apparent discrepancy between the SM predictions and experimental values of muon 𝑔−2 while providing testable signals for lepton flavor violation in charged lepton decays. Moreover, these models predict LSP neutralino abundance that is compatible with the Planck dark matter bounds. We find that scenarios in the framework of

In this paper we compute the next-to-leading order (NLO) QCD corrections for the inclusive nonleptonic decay rates of 𝐵 hadrons at subleading power of the heavy quark expansion. In particular, we discuss the coefficient of the chromomagnetic moment parameter 𝜇𝐺, which has a large uncertainty at leading order due to its dependence on the renormalization scale. We find that the renormalization-scale

We investigate the effect of screening of the four-quarks contact interactions by the ring diagram at finite temperature and density in an effective chiral model inspired by QCD in the Coulomb gauge. As a consequence, a medium-dependent coupling naturally emerges which, in a class of chiral models, brings the chiral crossover temperature down to the value calculated in lattice QCD at low net-baryon

We systematically analyze the impact of dilatonic dynamics on Skyrme spheres, crystals, and branes. The effects of the dilatonic model parameters, encompassing different underlying near-conformal dynamics, on the macroscopic properties of skyrmions such as their mass and radius are discussed. For spheres and crystals we identify special values of the ratio of the decay constants for which the second

It was shown recently that extended black hole thermodynamics, where the cosmological constant is a dynamical variable, giving rise to a pressure 𝑝 and its conjugate volume 𝑉, can be given a natural setting in the context of braneworld models. We study the specific heat capacities 𝐶𝑝⁡(𝑇) and 𝐶𝑉⁡(𝑇) of the quantum version of the Bañados, Teitelboim, and Zanelli (BTZ) black hole that lives in

Considerations of high energies in quantum field theories on smooth manifolds have led to generalized uncertainty principles and the possibility of a physical minimal length in quantum gravitational scenarios. In these models, the minimal length would be a physical limit, not just a mathematical tool, and should be Lorentz invariant. In this paper, we study two-qubit communication and entanglement

Current searches for gravitational waves (GWs) from black hole binaries using the LIGO and Virgo observatories are limited to analytical models for systems with black hole spins aligned (or antialigned) with the orbital angular momentum of the binary. Detecting black hole binaries with precessing spins (spins not aligned or antialigned with the orbital angular momentum) is crucial for gaining unique

The circular polarization of the stochastic gravitational wave background (SGWB) is a key observable for characterizing the origin of the signal detected by Pulsar Timing Array (PTA) collaborations. Both the astrophysical and the cosmological SGWB can have a sizeable amount of circular polarization, due to Poisson fluctuations in the source properties for the former, and to parity violating processes

We describe quantization schemes for scalar field cosmology in the metric variables with fundamental discreteness imposed with a lattice. The variables chosen for quantization determine the lattice, and each lattice produces distinct effective equations derived from semiclassical states. We show that requiring a bounce at the Planck density uniquely selects the volume lattice and gives the same effective

We investigate the potential of gravitational-wave background searches to constrain cosmic histories characterized by a stiff equation of state, preceded by a period of matter domination. Such a scenario leads to a characteristic peak in the primordial gravitational-wave spectrum originating from cosmological inflation. Assuming instant transitions between distinct epochs, which allows for an analytical

We study the gravitational wave (GW) emission of sources perturbed by periodic dynamical forces that do not cause secular evolution in the orbital elements. We construct a corresponding post-Newtonian waveform model and provide estimates for the detectability of the resulting GW phase perturbations, for both space-based and future ground-based detectors. We validate our results by performing a set

In this work, we study the impact of anisotropy on slowly rotating neutron stars by extending the Hartle–Thorne formalism in general relativity to include anisotropy in pressure up to second order in the angular velocity. We assess the presence of anisotropy within the star by employing a quasi-local relationship. Our results show that the ratio between the gravitational mass of the fastest anisotropic

High-frequency gravitational waves are the subject of rapidly growing interest in the theoretical and experimental community. In this work we calculate the resonant conversion of gravitational waves into photons in the magnetospheres of neutron stars via the inverse Gertsenshtein mechanism. The resonance occurs in regions where the vacuum birefringence effects cancel the classical plasma contribution

Astrophysical scenarios for the formation and evolution of intermediate-mass black holes (IMBHs) in the mass range 102⁢𝑀⊙≲𝑀≲106⁢𝑀⊙ remain uncertain, but future ground-based gravitational-wave (GW) interferometers will probe the lower end of the IMBH mass range. We study the detectability of IMBH binary mergers and the measurability of their parameters with next-generation ground-based detector networks

This work is the first, to the best of our knowledge, to study synchrotron radiation (SR) from a massless charged electron based on the quantum theory of radiation using exact solutions of the Dirac equation in a constant magnetic field. The cases of (2+1)-dimensional and (3+1)-dimensional quantum electrodynamics are considered separately, and the calculation of synchrotron radiation of conduction

Thousands of person years have been invested in searches for new physics (NP), the majority of them motivated by theoretical considerations. Yet, no evidence of beyond the Standard Model physics has been found. This suggests that model-agnostic searches might be an important key to explore NP, and help discover unexpected phenomena which can inspire future theoretical developments. A possible strategy

We explore the irreducible cosmological implications of a singlet real scalar field. Our focus is on theories with an approximate and spontaneously broken ℤ2 symmetry where quasistable domain walls can form at early times. This seemingly simple framework bears a wealth of phenomenological implications that can be tackled by means of different cosmological and astrophysical probes. We elucidate the

We extract the leading Fock-state light front wave functions of heavy flavor-asymmetric pseudoscalar mesons 𝐷, 𝐵, and 𝐵𝑐 from their Bethe-Salpeter wave functions, based on the Dyson-Schwinger equations approach. We then study their leading-twist parton distribution amplitudes, generalized parton distribution functions, and transverse momentum-dependent parton distributions. The spatial distributions

Charmed baryon decay plays an important role in studying the weak and strong interactions. Topological diagram is an intuitive tool for analyzing the dynamics of heavy hadron decays. In this work, we investigate the topological diagrams of charmed baryon antitriplet (ℬ𝑐⁢¯3) decays into a light baryon octet (ℬ8) and a light meson (𝑀). A one-to-one mapping between the topological diagram and the invariant

In this paper, we show that the Cutkosky cutting rules are still valid term by term in the expansion in powers of 𝜅 of the 𝜅-deformed 1-loop correction to the propagator of the 𝜅-deformed complex scalar field. We first present a general argument which relates each term in the expansion to a nondeformed amplitude containing additional propagators with mass 𝑀>𝜅. We then show the same thing more

The superpotential method is a reconstruction technique which has proven useful to build exact cosmological solutions. We here employ the superpotential method in order to reconstruct the features necessary for the inflaton potential to drive inflation and lead to the amplification of the curvature perturbations. Such an amplification, at wavelengths shorter than those observed in the cosmic microwave

The goal of this paper is to analyze the effects of the matter fields in the evolution of the Bianchi IX cosmology close to the singularity. Although the dynamics of this model is very involved, asymptotically, as the singularity is approached, it can be well approximated as a succession of Bianchi I periods connected by quick bounces against potential walls. Moreover, in such limit, matter fields

Coating noise is a consistently significant source of noise in high-precision gravitational wave measurements. In this paper, a model that quantifies the relationship between temperature noise and the optical path variation is proposed to analyze the thermo-optic noise of optical coating. There are two types of temperature-dependent noise—the traditional equilibrium thermal noise and the position noise

We complete the perturbative program for equilibrium thermodynamics of cosmological first-order phase transitions of gauge-Higgs theories that map into the (three-dimensional) superrenormalizable SU⁡(2)+doublet effective theory at high temperatures. To this end, we determine their finite-temperature effective potential at next-to-next-to-next-to-next-to-leading order (N4⁢LO). The computation of the

We update earlier lattice results for the binding energies of the flavor antitriplet of strong-interaction-stable doubly bottom, 𝐽𝑃=1+ tetraquarks, employing an extended sink construction which produces significantly improved ground-state effective-mass plateaus, as well as new, larger-volume ensembles which reduce possible finite-volume effects at lighter pion masses. The updated bindings are 115(17) MeV

Modifications to general relativity lead to effects in the spectrum of quasinormal modes of black holes. In this paper, we develop a parametrized formalism to describe deviations from general relativity in the Teukolsky equation, which governs linear perturbations of spinning black holes. We do this by introducing a correction to the effective potential of the Teukolsky equation in the form of a 1/𝑟

The frozen star is a nonsingular, ultracompact object that, to an external observer, looks exactly like a Schwarzschild black hole, but with a different interior geometry and matter composition. The frozen star needs to be sourced by an extremely anisotropic fluid, for which the sum of the radial pressure and energy density is either vanishing or perturbatively small. Here, we show that this matter

We present nonperturbative lattice calculations in the quenched approximation of the low-lying meson and baryon spectrum of the SU(4) gauge theory with fundamental fermion constituents. This theory is one instance of stealth dark matter, a class of strongly coupled theories, where the lowest mass stable baryon is the dark matter candidate. This work constitutes the first milestone in the program to