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The effect of strong magnetic field on the stability and gross properties of bulk as well as quasi-bulk quark matter has been investigated using the conventional MIT bag model. Both the Landau diamagnetism and the paramagnetism of quark…

高能物理 - 唯象学 · 物理学 2011-05-05 Somenath Chakrabarty

We have studied a holographically dual description of superconductor in (2+1)-dimensions in the presence of applied magnetic field, and observed that there exists a critical value of magnetic field, below which a charged condensate can form…

高能物理 - 理论 · 物理学 2010-05-28 Eiji Nakano , Wen-Yu Wen

When nuclear matter reaches a high enough density, we expect that the nucleons will overlap so much as to lose their separate identities, and merge into quark matter. In this talk I will review some theoretical expectations and speculations…

高能物理 - 唯象学 · 物理学 2007-05-23 Mark Alford

The magnetized phase diagram for three-flavor quark matter is studied within the Polyakov extended Nambu--Jona-Lasinio model. The order parameters are analyzed with special emphasis on the strange quark condensate. We show that the presence…

高能物理 - 唯象学 · 物理学 2018-02-07 Márcio Ferreira , Pedro Costa , Constança Providência

It is argued that the topcolor models recently proposed by Hill [1] may face significant constraints from flavor-changing neutral current processes (such as $B-\bar{B}$ mixing) unless the mixing angles between down-type quarks are small.…

高能物理 - 唯象学 · 物理学 2008-11-26 Dimitris Kominis

We study the response of the QCD vacuum to strong magnetic fields, using a potential model for the quark-antiquark interaction. We find that production of spin-polarized u-ubar pairs is energetically favorable for fields B > B_crit \sim 10…

高能物理 - 唯象学 · 物理学 2008-11-26 Daniel Kabat , Kimyeong Lee , Erick Weinberg

We consider the effect of a six-fermion interaction of the {'}t Hooft form in the quark-quark channel on the ground state of matter at finite density. The coupling constant for this new term is varied within the limits suggested by…

高能物理 - 唯象学 · 物理学 2011-07-19 Andrew W. Steiner

The chromomagnetic interaction, with full account for flavour-symmetry breaking, is applied to S-wave configurations containing two quarks and two antiquarks. Phenomenological implications are discussed for light, charmed, charmed and…

高能物理 - 唯象学 · 物理学 2008-11-26 Franco Buccella , Hallstein Hogaasen , Jean-Marc Richard , Paul Sorba

We experimentally investigate the effect of a magnetic field on photon detection in superconducting single-photon detectors. At low fields, the effect of a magnetic field is through the direct modification of the quasiparticle density of…

Strong magnetic fields impact quantum-chromodynamics (QCD) properties in several situations; examples include the early universe, magnetars, and heavy-ion collisions. These examples share a common trait: time evolution. A prominent QCD…

高能物理 - 唯象学 · 物理学 2021-03-30 Gastao Krein , Carlisson Miller

We study the dependence of the chiral condensate on external magnetic field in the context of holographic QCD at large number of flavors. We consider a holographic QCD model where the flavor degrees of freedom fully backreact on the color…

高能物理 - 理论 · 物理学 2017-04-05 Umut Gürsoy , Ioannis Iatrakis , Matti Järvinen , Govert Nijs

The role of the strange quark mass for the phase structure of QCD at non-vanishing densities is studied by employing a recently developed self-consistent truncation scheme for the Dyson-Schwinger equations of the quark propagators in Landau…

高能物理 - 唯象学 · 物理学 2008-11-26 Dominik Nickel , Reinhard Alkofer , Jochen Wambach

We discuss how the co-existence of hyperons, antikaon condensate and color superconducting quark matter in neutron star interior influences the gross properties of compact stars such as, the equation of state and mass-radius relationship.…

天体物理学 · 物理学 2009-11-10 Sarmistha Banik , Debades Bandyopadhyay

It is shown that color-superconducting quark matter, where quarks of the same flavor form Cooper pairs with spin one, exhibits an electromagnetic Meissner effect. This is in contrast to spin-zero color superconductors where Cooper pairs…

核理论 · 物理学 2009-11-10 Andreas Schmitt , Qun Wang , Dirk H. Rischke

Following some of the recent articles on hole super-conductivity and related phenomena by Hirsch \cite{H1,H2,H3}, a simple model is proposed to explain the observed low surface magnetic field of the expected quark stars. It is argued that…

天体物理学 · 物理学 2015-05-13 Nandini Nag , Sutapa Ghosh , Roni Saha , Somenath Chakrabarty

Strange stars in the color flavor locked phase, as described by a generalization of the phenomenological MIT bag model proposed in the context of color superconductivity, are studied through a model motivated by the semiclassical solutions…

高能物理 - 唯象学 · 物理学 2022-08-31 Guilherme Lorenzatto Volkmer , Dimiter Hadjimichef

The energy and momentum dependence of the gluon self-energy is investigated in a color superconductor with two flavors of massless quarks. The presence of a color-superconducting quark-quark condensate modifies the gluon self-energy for…

核理论 · 物理学 2009-11-07 Dirk H. Rischke

Recent indications for high neutron star masses (M \sim 2 M_sun) and large radii (R > 12 km) could rule out soft equations of state and have provoked a debate whether the occurence of quark matter in compact stars can be excluded as well.…

核理论 · 物理学 2017-08-23 D. B. Blaschke , T. Klahn , F. Sandin

In this work we examine possible effects of an external magnetic field in the strongly interacting matter phase diagram. The study is performed using the Polyakov-Nambu-Jona-Lasinio model. Possible consequences of the inverse magnetic…

高能物理 - 唯象学 · 物理学 2022-09-21 Pedro Costa , Márcio Ferreira , Constança Providência

Effects of an external magnetic field on the fluctuations of quark number, fluctuations and correlations of conserved charges, including baryon number, electric charge and strangeness, are studied in the 2+1 flavor…

高能物理 - 唯象学 · 物理学 2015-06-16 Wei-jie Fu