## 2023 Vol. 47, No. 11

Display Method: |

2023, 47(11): 113001. doi: 10.1088/1674-1137/ace9c5

**Abstract:**

Based on

2023, 47(11): 113002. doi: 10.1088/1674-1137/ace9c6

**Abstract:**

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this study, the potential of searching for proton decay in the

2023, 47(11): 113003. doi: 10.1088/1674-1137/acf034

**Abstract:**

We determine the resonant parameters of the vector states

2023, 47(11): 113101. doi: 10.1088/1674-1137/acf037

**Abstract:**

We present the novel

*CP*asymmetry in the interference region. The

*ϕ*,

*ρ*, and

*ω*. We calculate the

*CP*asymmetry from the decay mode of

*CP*asymmetries are presented and a detailed analysis is performed. The

*CP*asymmetry from the decay mode of

*CP*asymmetry can provide a favorable theoretical support for experimental exploration in the future.

2023, 47(11): 113102. doi: 10.1088/1674-1137/acf48c

**Abstract:**

In this study, we investigate possible molecular states composed of two charmed strange baryons from the

2023, 47(11): 114001. doi: 10.1088/1674-1137/acc16f

**Abstract:**

A

*α*-clustering strength, which confirm the formation of the cluster structure with a one-hole configuration in light nuclei and encourage further systematic studies of the cluster structure in

2023, 47(11): 114101. doi: 10.1088/1674-1137/acf287

**Abstract:**

The cross sections of the

^{169}Tm(

*n*, 2

*n*)

^{168}Tm reaction have been measured at incident energies of 12 to 19.8 MeV using the activation technique, relative to the

^{93}Nb(

*n*, 2

*n*)

^{92m}Nb reaction. Thulium (Tm) samples were irradiated on the surface of a two-ring orientation assembly with neutrons produced from the

^{3}H(

*d*,

*n*)

^{4}He reaction at the 5SDH-2 1.7-MV Tandem accelerator in China. Theoretical model calculations were performed. The present data were then compared with previous experimental data and available evaluated data. This study provides more precise nuclear data for improvement of future evaluations.

2023, 47(11): 114102. doi: 10.1088/1674-1137/acf65c

**Abstract:**

Utilizing the PYTHIA8 Angantyr model, which incorporates the multiple-parton interaction (MPI) based color reconnection (CR) mechanism, we study the relative neutron density fluctuation and neutron-proton correlation in Au+Au collisions at

2023, 47(11): 114103. doi: 10.1088/1674-1137/acf48a

**Abstract:**

In this study, considering the modified preformation probability

*α*-particle preformation probability and an adjustable parameter proposed by Wang

*et al.*[Chin. Phys. C

**45**, 044111 (2021)], respectively, we extend a new simple model put forward by Bayrak [J. Phys. G

**47**, 025102 (2020)] to systematically study the cluster radioactivity half-lives of 28 trans-lead nuclei ranging from

*et al.*[Phys. Rev. C

**80**, 044326 (2009)], a three-parameter model-independent formula put forward by Balasubramaniam

*et al.*[Phys. Rev. C

**70**, 017301 (2004)], and the semi-empirical model proposed by Tavares

*et al.*[Eur. Phys. J. A

**49**, 1 (2013)] are used. Our calculated results reproduce the experimental data well, with a standard deviation of 0.818. Furthermore, we use this model to predict the cluster radioactivity half-lives of 51 possible cluster radioactive candidates whose cluster radioactivities are energetically allowed or observed but not yet quantified in NUBASE2020.

2023, 47(11): 114104. doi: 10.1088/1674-1137/acf65d

**Abstract:**

Through mean-field calculations, we demonstrate that, in a large

*Z*nucleus binding multiple muons, these heavy leptons localize within a few dozen femtometers of the nucleus. The mutual Coulomb interactions between the muons and protons can lead to a substantial decrease in proton chemical potential, surpassing 1 MeV. These findings imply that, in principle, the proton-dripline can be expanded on the nuclear chart, suggesting the possible production of nuclei with

*Z*around 120.

2023, 47(11): 114105. doi: 10.1088/1674-1137/acf7b6

**Abstract:**

Using the anti-de Sitter/conformal field theory (AdS/CFT) correspondence, we study the holographic Schwinger effect in an anisotropic background with the Gauss-Bonnet term. As the background geometry is anisotropic, we consider both cases of the test particle pair and the electric field perpendicular to and parallel to the anisotropic direction. It is shown that the Schwinger effect is enhanced in the perpendicular case when anisotropy rises. In the parallel case, this effect is reversed. Additionally, the potential barrier and the critical electric field in the parallel case are more significantly modified by anisotropy compared to the perpendicular case. We also find that the presence of the Gauss-Bonnet coupling tends to increase the Schwinger effect.

2023, 47(11): 115101. doi: 10.1088/1674-1137/acedf2

**Abstract:**

The effect of spacetime curvature on photon motion may offer an opportunity to propose new tests on gravity theories. In this study, we investigate and focus on the massless (photon) particle motion around black-bounce gravity. We analyze the horizon structure around a gravitational compact object described by black-bounce spacetime. The photon motion and the effect of gravitational weak lensing in vacuum and plasma are discussed, and the shadow radius of the compact object is also studied in black-bounce spacetime. Additionally, the magnification of the image is studied using the deflection angle of light rays.

2023, 47(11): 115102. doi: 10.1088/1674-1137/acf0b3

**Abstract:**

Recently, some meaningful results have been obtained by studying the phase transition, critical exponents, and other thermodynamical properties of different black holes. Especially for the Anti-de Sitter (AdS) black holes, their thermodynamical properties nearby the critical point have attracted considerable attention. However, there exists little work on the thermodynamic properties of the de Sitter (dS) spacetime with black holes. In this paper, based on the effective thermodynamical quantities and the method of the Maxwell's equal-area law, we explore the phase equilibrium for the de Sitter spacetime with the charged black holes and the cloud of string and quintessence (i.e., C-dSSQ spacetime). The boundaries of the two-phase coexistence region in both

*ω*and the ratio of two horizon radii

2023, 47(11): 115103. doi: 10.1088/1674-1137/acf0b2

**Abstract:**

The gravitational field

2023, 47(11): 115104. doi: 10.1088/1674-1137/acf2fb

**Abstract:**

To scrutinize the nature of dark energy, many equations of state have been proposed. In this context, we examine the simplest parameterization of the equation of state parameter of dark energy in an anisotropic Bianchi type I universe compared with the ΛCDM model. Using different combinations of data samples, including Pantheon and Pantheon +

*H*(

*z*), alongside applying the minimization of the

2023, 47(11): 115105. doi: 10.1088/1674-1137/aceee4

**Abstract:**

The thermodynamics of BTZ black holes are revisited with a variable gravitational constant. A new pair of conjugated thermodynamic variables are introduced, including the central charge

*C*and chemical potential

*μ*. The first law of thermodynamics and the Euler relationship, instead of the Smarr relationship in the extended phase space formalism, are matched perfectly in the proposed formalism. Compatible with the standard extensive thermodynamics of an ordinary system, the black hole mass is verified to be a first order homogeneous function of the related extensive variables, and restores the role of internal energy. In addition, the heat capacity has also resulted in a first order homogeneous function using this formalism, and asymptotic behavior is demonstrated at the high temperature limit. The non-negativity of the heat capacity indicates that the rotating and charged BTZ black holes are thermodynamically stable.

2023, 47(11): 115106. doi: 10.1088/1674-1137/acf2fc

**Abstract:**

We study the impact of thermal fluctuations on the thermodynamics, quasi-normal modes, and phase transitions of an anti-de Sitter Euler-Heisenberg black hole (BH) with a nonlinear electrodynamic field. An anti-de Sitter Euler-Heisenberg BH with a nonlinear electrodynamic field is composed of four parameters: the mass, electric charge, cosmological constant, and Euler-Heisenberg parameter. We calculate thermodynamic variables such as Hawking temperature, entropy, volume, and specific heat, which comply with the first law of thermodynamics. First, we use this BH to determine the thermodynamics and thermal fluctuations with the Euler-Heisenberg parameter to distinguish their effect on uncorrected and corrected thermodynamical quantities. We derive the expression for corrected entropy to study the impact of thermal fluctuation with simple logarithmic corrections on unmodified thermodynamical potentials, including Helmholtz energy, pressure, Gibbs free energy, and enthalpy. The Euler-Heisenberg parameter improves BH stability at large radii. Second, we analyze the local stability of the proposed BH, and the phase shifts of the BH are also investigated using temperature and specific heat. When there is a decrease in charge and an increase in

*α*, the temperature shifts from an unstable region to a stable one. Similarly, increases in local stability are observed with each of these parameters. Third, we use null geodesics to deal with the effects of nonlinear electrodynamics on the quasi-normal modes of the Euler-Heisenberg anti-de Sitter BH. The null geodesics provide the angular velocity and Lyapunov exponent of the photon sphere, which are the same as the real and imaginary parts of the quasi-normal modes in the eikonal limit.

2023, 47(11): 115107. doi: 10.1088/1674-1137/acf2fa

**Abstract:**

In this study, we conduct a comprehensive investigation of the cosmological model described by

*λ*represents a free parameter) in light of the most recent observational data. By constraining the model using the

*λ*, this approach motivates and encourages further exploration into the extensive landscape of this model and its potential applications across diverse realms of cosmology and astronomy.

2023, 47(11): 115108. doi: 10.1088/1674-1137/acf48b

**Abstract:**

We investigate the behaviors of the scalar operator and holographic entanglement entropy in the metal/superconductor phase transition with Power-Maxwell electrodynamics in a higher dimensional background away from the probe limit. We observe that the larger parameters

*b*and

*q*make the condensation of the scalar operator more difficult, and the critical temperature decreases more slowly as the factors increase. In the belt geometry, the value of the entanglement entropy in the metal and superconductor phases is not only related to the the strength of the Power-Maxwell field but also to the width of the strip geometry. At the phase transition point, the discontinuous slope of entanglement entropy is universal for different model factors. It turns out that holographic entanglement entropy is a powerful tool to probe the properties of the phase transition in this holographic superconductor model.

**ISSN** 1674-1137 **CN** 11-5641/O4

Original research articles, Ietters and reviews Covering theory and experiments in the fieids of

- Particle physics
- Nuclear physics
- Particle and nuclear astrophysics
- Cosmology

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