Strange quark matter could be found in the core of neutron stars or forming strange stars. As is well known, these astrophysical objects are endowed with strong magnetic fields that affect microscopic properties and modify macroscopic system. In this article we study role a field thermodynamical magnetized degenerate gas, taking into account \ensuremath{\beta}-equilibrium charge neutrality. Quarks electrons interact via their electric charges anomalous moments. contrast to value ${10}^{19}$...

The problem of anisotropic pressures arising from the spatial symmetry breaking introduced by an external magnetic field in quantum systems is discussed. role conservation energy and momentum fields as well providing boundary conditions statistics considered. vanishing average transverse for electron–positron system its Landau ground state, i.e. pressure, shown. situation neutron case strange quark matter (SQM) β equilibrium briefly Thermodynamical relations form stress tensor a relativistic...

We study magnetic field effects on the Equations-of-State (EoS) and structure of Bose–Einstein Condensate (BEC) stars, i.e. a compact object composed by gas interacting spin-one bosons formed up pairing two neutrons. To include in thermodynamic description, we assume that particle–magnetic particle–particle interactions are independent. consider configurations for field: one where it is constant externally fixed, another produced through self-magnetization. Stable self-magnetized magnetized...

Quark matter is expected to exist in the interior of compact stellar objects as neutron stars or even more exotic strange stars, based on Bodmer–Witten conjecture. Bare quark and (normal) quark-matter those possessing a baryon (electron-supported) crust, are hypothesized good candidates explain properties set peculiar sources such enigmatic X-ray source RX J1856.5-3754, some pulsars PSR B1828-11 B1642-03, anomalous soft γ-ray repeaters. In MIT bag model, quarks treated degenerate Fermi gas...

A photon exhibits a tiny anomalous magnetic moment ${\ensuremath{\mu}}_{\ensuremath{\gamma}}$ due to its interaction with an external constant field in vacuum through the virtual electron-positron background. It is paramagnetic (${\ensuremath{\mu}}_{\ensuremath{\gamma}}>0$) whole region of transparency, i.e., below first threshold energy for pair creation, and has maximum near this threshold. The different eigenmodes polarized along perpendicular field. Explicit expressions are given cases...

The thermodynamical properties of a neutral vector boson gas in constant magnetic field are studied starting from the spectrum given by Proca formalism. Bose Einstein Condensation (BEC) and magnetization obtained, for three one dimensional cases, limit low temperatures. In dimensions undergoes phase transition to an usual BEC which critical temperature depends on field. dimension diffuse condensate appears as charged gas. both condensation is reached not only decreasing but also increasing...

Our aim is to study the electron–positron vacuum pressures in presence of a strong magnetic field B. To that end, we obtain general energy–momentum tensor, depending on external parameters, which zero temperature and density limit leads expressions are approximation-independent. Anisotropic arise, tree approximation case, pressure along B positive, whereas perpendicular it negative. Due common axial symmetry, formal analogy with Casimir effect discussed, addition usual negative plates, there...

We study Faraday rotation in the quantum relativistic limit. Starting from photon self-energy presence of a constant magnetic field polarization vector plane electromagnetic wave which travel along fermion-antifermion gas is studied. The connection between effect and Hall (QHE) discussed. also investigated for massless (2+1)-dimensional fermion system derived by using compactification dimension parallel to field. angle shows quantized behavior as conductivity two three dimensions.

We study the role of temperature and magnetic field on equation state macroscopic properties Bose-Einstein condensate stars. These compact objects are composed a condensed gas interacting neutral vector bosons coupled to uniform constant field. found that main consequence finite in magnetized equations is increase inner pressure star. As consequence, hot stars larger heavier than their zero-temperature counterparts. However, maximum masses obtained by model remain almost unchanged,...

We discuss the occurrence of Bose-Einstein condensation in systems noninteracting charged particles three and one dimensions presence an external magnetic field. In dimensional, as well field cases, although not a critical temperature, characteristic temperature can be found, corresponding to case which ground state density becomes macroscopic fraction total density. The relativistic scalar vector is studied. results give support existence superconductivity extremely strong fields, lead...

We study the equation of motion neutral vector bosons bearing a magnetic moment (MM). The effective rest mass is decreasing function field intensity. Consequently diffuse condensation appears below critical value field. For typical values densities and fields magnetization positive boson system can maintain self-consistently. A discussion relevance in astrophysics presented.

We obtain the pressures and equations of state (EoSs) charged neutral vector boson gases in a constant magnetic field. The axial symmetry imposed on system by field splits parallel perpendicular directions along axis, which leads to anisotropic EoSs. values energy densities are order those Fermi compact objects. This opens possibility existence magnetized stars. Under certain conditions, pressure might be negative, imposing bound stability star. Other implications negative also discussed.

Abstract We study the thermodynamic properties of a neutral vector boson gas in presence constant magnetic field, by means semi-classical approach that allows to introduce spin non-relativistic spectrum bosons. Bose-Einstein condensation is obtained and it turns out depend on all parameters involved problem: temperature, particle density field. A spontaneous magnetization appears at low temperature as consequence condensed state. The axial symmetry imposed system field presence, splits...