scholarly journals Electrical conductivity of quark matter at finiteTunder external magnetic field

2012 ◽  
Vol 86 (3) ◽  
Author(s):  
Seung-il Nam
Keyword(s):  
Magnetic Field ◽  
Electrical Conductivity ◽  
External Magnetic Field ◽  
Quark Matter

Chiral condensate of cold dense quark matter with external magnetic field

2020 ◽  
Vol 35 (19) ◽  
pp. 2050160
Author(s):  
Song Shi ◽  
Juan Liu
Keyword(s):  
Magnetic Field ◽  
Phase Diagram ◽  
External Magnetic Field ◽  
Quark Matter ◽  
Chemical Potential ◽  
Field Approximation ◽  
Chiral Condensate ◽  
Mean Field Approximation ◽  
Dynamical Mass ◽  
Dense Quark Matter

At zero temperature and finite chemical potential, the gap equation of cold dense quark matter under external magnetic field is studied with NJL model in the mean-field approximation. By introducing new methods, it is found that the Nambu phase has sophisticated structures which have not been studied before. As a consequence, the phase diagram is expanded and divided into five areas, in each area the condensate has unique behaviors with chemical potential varying. Furthermore, the expanded phase diagram is used to predict the order of phase transition between the Nambu phase and the Wigner phase, it can also be used to explain the relations of dynamical mass and chemical potential. Meanwhile, the metastable states and cascade effect of dynamical mass are studied in this paper.

On Electrical Conductivity Measurements of Molten Metals by Inductive Technique

2004 ◽  
Vol 126 (3) ◽  
pp. 468-470 ◽  
Author(s):  
Sayavur I. Bakhtiyarov ◽  
Mihai Dupac ◽  
Ruel A. Overfelt ◽  
Sorin G. Teodorescu
Keyword(s):  
Magnetic Field ◽  
Experimental Data ◽  
Electrical Conductivity ◽  
Fluid Flow ◽  
External Magnetic Field ◽  
Electric Conductivity ◽  
Molten Metals ◽  
Conductivity Measurements ◽  
Permanent Magnetic Field ◽  
Rotating Liquid

In this paper, we propose a new relationship between the opposing mechanical torque and the electric conductivity of a rotating liquid specimen in a permanent external magnetic field of constant induction, which includes the effect of fluid flow. The proposed relationship was applied to describe the experimental data for a conductive specimens rotating in a permanent magnetic field.

Fluid Flow Effect in Electrical Conductivity Measurements of Molten Metals by Inductive Technique

2002 ◽  
Author(s):  
Sayavur I. Bakhtiyarov ◽  
Mihai Dupac ◽  
Ruel A. Overfelt ◽  
Sorin G. Teodorescu
Keyword(s):  
Magnetic Field ◽  
Experimental Data ◽  
Electrical Conductivity ◽  
Fluid Flow ◽  
External Magnetic Field ◽  
Electric Conductivity ◽  
Molten Metals ◽  
Conductivity Measurements ◽  
Permanent Magnetic Field ◽  
Rotating Liquid

In this paper we propose a new relationship between the opposing mechanical torque and the electric conductivity of a rotating liquid specimen in a permanent external magnetic field of constant induction, which includes the effect of fluid flow. The proposed relationship was applied to describe the experimental data for a conductive specimen rotating in a permanent magnetic field.

scholarly journals Phase transition and critical end point driven by an external magnetic field in asymmetric quark matter

2014 ◽  
Vol 89 (5) ◽  
Author(s):  
Pedro Costa ◽  
Márcio Ferreira ◽  
Hubert Hansen ◽  
Débora P. Menezes ◽  
Constança Providência
Keyword(s):  
Magnetic Field ◽  
Phase Transition ◽  
External Magnetic Field ◽  
Quark Matter ◽  
End Point

scholarly journals Spin polarization in high density quark matter under a strong external magnetic field

2016 ◽  
Vol 25 (12) ◽  
pp. 1650106 ◽  
Author(s):  
Yasuhiko Tsue ◽  
João da Providência ◽  
Constança Providência ◽  
Masatoshi Yamamura ◽  
Henrik Bohr
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Quark Matter ◽  
Chemical Potential ◽  
Axial Vector ◽  
Point Interaction ◽  
Vector Type ◽  
Quark Spin ◽  
Spin Polarized ◽  
Type Interaction

In high density quark matter under a strong external magnetic field, possible phases are investigated by using the two-flavor Nambu–Jona–Lasinio (NJL) model with tensor-type four-point interaction between quarks, as well as the axial-vector-type four-point interaction. In the tensor-type interaction under the strong external magnetic field, it is shown that a quark spin polarized phase is realized in all regions of the quark chemical potential under consideration within the lowest Landau level approximation. In the axial-vector-type interaction, it is also shown that the quark spin polarized phase appears in the wide range of the quark chemical potential. In both the interactions, the quark mass in zero and small chemical potential regions increases which indicates that the chiral symmetry breaking is enhanced, namely the magnetic catalysis occurs.

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