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This study explores the structural formation of various spherically symmetric anisotropic stars within the framework of Rastall theory. To achieve this, we derive modified field equations which are then resolved using the Finch-Skea ansatz,…

General Relativity and Quantum Cosmology · Physics 2025-06-05 Malick Sallah , M. Sharif

We propose a spherically symmetric and anisotropic model for strange quark stars within the framework of MIT Bag model. Though the model is found to comply with all the physical requirements of a realistic star satisfying a strange matter…

General Relativity and Quantum Cosmology · Physics 2017-11-20 Mehedi Kalam , Anisul Ain Usmani , Farook Rahaman , Sk. Monowar Hossein , Indrani Karar , Ranjan Sharma

The strangeness content of hadronic matter is studied in a string-flip model that reproduces various aspects of the QCD-inspired phenomenology, such as quark clustering at low density and color deconfinement at high density, while avoiding…

Nuclear Theory · Physics 2009-11-07 G. Toledo Sanchez , J. Piekarewicz

Recycling strange stars to millisecond periods is studied within the framework of general relativity. We employ equations of state of strange quark matter based on the MIT Bag Model, with massive strange quarks and lowest order QCD…

Astrophysics · Physics 2011-08-11 J. L. Zdunik , P. Haensel , E. Gourgoulhon

We estimate the constraints of observational mass and redshift on the properties of equations of state for quarks in the compact stars. We discuss two scenarios: strange stars and hybrid stars. We construct the equations of state utilizing…

Astrophysics · Physics 2009-11-11 Nana Pan , Xiaoping Zheng

The strong interactions at low energy scales determine the state of the supranuclear matter in the pulsar-like compact objects. It is proposed that the bulk strong matter could be composed of strangeons, which are quark clusters with a…

General Relativity and Quantum Cosmology · Physics 2021-11-25 Yong Gao , Xiao-Yu Lai , Lijing Shao , Ren-Xin Xu

We investigated the stability of the chameleon screening mechanism in the Brans-Dicke scalar-tensor model. We define a constraint on the Brans-Dicke parameter $\omega_{BD}^*$ identifying two stability groups, $\omega_{BD}>\omega_{BD}^*$ and…

General Relativity and Quantum Cosmology · Physics 2024-08-06 Azwar Sutiono , Agus Suroso , Freddy Permana Zen

We study the time evolution of quenched random-mass Dirac fermions in one dimension by quantum lattice Boltzmann simulations. For nonzero noise strength, the diffusion of an initial wave packet stops after a finite time interval,…

Computational Physics · Physics 2018-04-05 Christian B. Mendl , Silvia Palpacelli , Alex Kamenev , Sauro Succi

We demonstrate that cosmological observations place strong bounds on the reheat temperature $T_\text{RH}$ of the Standard Model (SM) in minimal models of `quirks' -- heavy fermions transforming under the SM gauge group together with a new…

High Energy Physics - Phenomenology · Physics 2025-12-25 Pouya Asadi , Graham D. Kribs , Markus A. Luty

We apply the chiral SU(3) quark mean field model to study the properties of strange hadronic matter at finite temperature. The liquid-gas phase transition is studied as a function of the strangeness fraction. The pressure of the system…

Nuclear Theory · Physics 2009-11-10 P. Wang , D. B. Leinweber , A. W. Thomas , A. G. Williams

The equation of state of strange matter build of the u,d,s quarks in the framework of the MIT bag model is studied. The scaling relations with bag constant are discussed and applied to the determination of maximum frequency of a particle in…

Astrophysics · Physics 2011-05-23 J. L. Zdunik

A model for strangelets at finite temperature is built, in which the quark masses are dynamically generated. The dynamical chiral symmetry breaking inside strangelets at finite temperature is investigated. It is found that the chiral…

Nuclear Theory · Physics 2009-12-08 Chang-Qun Ma , Chun-Yuan Gao

The stability of matter composed of electrons and static nuclei is investigated for a relativistic dynamics for the electrons given by a suitably projected Dirac operator and with Coulomb interactions. In addition there is an arbitrary…

Statistical Mechanics · Physics 2009-10-28 Elliott H. Lieb , Heinz Siedentop , Jan Philip Solovej

Rapidity dependent strangeness enhancement factors for the identified particles have been studied with the help of a string based hadronic transport model UrQMD-3.3 (Ultra-relativistic Quantum Molecular Dynamics) at FAIR energies. A strong…

High Energy Physics - Phenomenology · Physics 2017-06-05 Kalyan Dey , B. Bhattacharjee

Within the framework of the hypothesis offered by authors about a complex-valued nature of physical quantities the stability of basic equations of the classical physics concerning complex-valued perturbations of parameters and boundary…

General Physics · Physics 2007-05-23 V. V. Lyahov , V. M. Nechshadim

Strangeness plays an important role in the study of quark matter since it indicates the rate at which new particles are being produced and therefore provides information about the degree of chemical equilibration reached in heavy ion…

Nuclear Theory · Physics 2007-05-23 J. Cleymans

A new understanding of the stability of self-interacting dark matter is pointed out, based on the simplest spontaneously broken Abelian $U(1)$ gauge model with one complex scalar and one Dirac fermion. The key is the imposition of dark…

High Energy Physics - Phenomenology · Physics 2017-08-23 Ernest Ma

The spherically symmetric thin shells of the macroscopically stable quark-gluon matter are considered within the frameworks of the bag model and theory of discontinuities in general relativity. The equation of state for the two-dimensional…

General Relativity and Quantum Cosmology · Physics 2009-10-31 Konstantin G. Zloshchastiev

We present analytical and numerical results that demonstrate the presence of anomalous entanglement behavior on the Dirac Billiards. We investigate the statistical distribution of the characteristic entangled measures, focusing on the mean,…

Mesoscale and Nanoscale Physics · Physics 2015-01-26 J. G. G. S. Ramos , I. M. L. da Silva , A. L. R. Barbosa

Could it be that the matter from the electrons in high Tc superconductors is of a radically new kind that may be called "many body entangled compressible quantum matter"? Much of this text is intended as an easy to read tutorial, explaining…

Strongly Correlated Electrons · Physics 2019-05-22 Jan Zaanen