scholarly journals Spin polarizations under a pseudovector interaction between quarks with the Kobayashi–Maskawa–’t Hooft term in high density quark matter

2020 ◽  
Vol 29 (01) ◽  
pp. 2050003 ◽  
Author(s):  
Masatoshi Morimoto ◽  
Yasuhiko Tsue ◽  
João da Providência ◽  
Constança Providência ◽  
Masatoshi Yamamura
Keyword(s):  
Spin Polarization ◽  
Quark Matter ◽  
Strange Quark ◽  
Chemical Potential ◽  
High Density ◽  
Quark Spin ◽  
Flavor Mixing ◽  
Small Chemical

A possibility of a quark spin polarization originating from a pseudovector condensate is investigated in the three-flavor Nambu–Jona–Lasinio model with the Kobayashi–Maskawa–’t Hooft interaction which leads to flavor mixing. It is shown that a pseudovector condensate related to the strange quark easily occurs compared with pseudovector condensate related to light quarks. Further, it is shown that the pseudovector condensate related to the strange quark appears at a slightly small chemical potential by the effect of the flavor mixing due to the Kobayashi–Maskawa–’t Hooft interaction.

scholarly journals Quark spin polarization in high density quark matter

2014 ◽  
Vol 66 ◽  
pp. 04029
Author(s):  
Yasuhiko Tsue ◽  
João da Providência ◽  
Constança Providência ◽  
Masatoshi Yamamura
Keyword(s):  
Spin Polarization ◽  
Quark Matter ◽  
High Density ◽  
Quark Spin

scholarly journals Nonzero tensor condensates in cold quark matter within the three-flavor Nambu–Jona–Lasinio model with the Kobayashi–Maskawa–’t Hooft interaction

2020 ◽  
Vol 29 (06) ◽  
pp. 2050036 ◽  
Author(s):  
Ai Kagawa ◽  
Masatoshi Morimoto ◽  
Yasuhiko Tsue ◽  
João da Providência ◽  
Constança Providência ◽  
...  
Keyword(s):  
Quark Matter ◽  
Strange Quark ◽  
Chemical Potential ◽  
Mixing Effect ◽  
Flavor Mixing ◽  
Type Interaction

The possible formation of tensor condensates originated from a tensor-type interaction between quarks is investigated in the three-flavor Nambu–Jona–Lasinio model including the Kobayashi–Maskawa–’t Hooft interaction, which leads to flavor mixing. It is shown that independent two tensor condensates appear and a tensor condensate related to the strange quark easily occurs by the effect of the flavor mixing compared with one related to light quarks. Also, it is shown that the tensor condensate related to the strange quark appears at a slightly smaller chemical potential if the Kobayashi–Maskawa–’t Hooft interaction is included, due to the flavor mixing effect. It is also shown that the two kinds of tensor condensates may coexist in a certain quark chemical potential due to the flavor mixing.

scholarly journals Quark-spin Polarization And Spontaneous Magnetization In High Density Quark Matter

2017 ◽  
Author(s):  
Yasuhiko Tsue ◽  
João da Providência ◽  
Constança Providência ◽  
Hiroaki Matsuoka ◽  
Masatoshi Yamamura ◽  
...  
Keyword(s):  
Spin Polarization ◽  
Quark Matter ◽  
Spontaneous Magnetization ◽  
High Density ◽  
Quark Spin

scholarly journals Interplay between spin polarization and color superconductivity in high density quark matter

2013 ◽  
Vol 2013 (10) ◽  
Author(s):  
Yasuhiko Tsue ◽  
João da Providência ◽  
Constança Providência ◽  
Masatoshi Yamamura ◽  
Henrik Bohr
Keyword(s):  
Spin Polarization ◽  
Quark Matter ◽  
High Density ◽  
Color Superconductivity

Color-flavor-locked matter in a nonuniform strong magnetic field

2019 ◽  
Vol 34 (29) ◽  
pp. 1950170
Author(s):  
Hao Liang ◽  
Xin-Jian Wen
Keyword(s):  
Magnetic Field ◽  
Quark Matter ◽  
Spatial Dependence ◽  
Strange Quark ◽  
Chemical Potential ◽  
Interaction Strength ◽  
Strange Quark Matter ◽  
Upper Limit ◽  
Increasing Function ◽  
The Magnetic Field

The magnetic-color-flavor-locked quark matter is investigated in the Nambu–Jona-Lasinio model. Strong nonuniform magnetic fields are employed in order to mimic the spatial dependence of the magnetic field strength at high densities. We find that the gap solution depends strongly on the diquark coupling interaction. Based on the requirement that the parallel pressure should be an increasing function of the chemical potential, an upper limit on the central magnetic field [Formula: see text][Formula: see text]G is obtained, which increases slightly with the diquark interaction strength. Furthermore, much stronger central magnetic field could occur in the stars composed of magnetic-color-flavor matter than that of ordinary strange quark matter.

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.

scholarly journals Spin polarization versus color-flavor locking in high-density quark matter

2015 ◽  
Vol 2015 (1) ◽  
pp. 13D02-0 ◽  
Author(s):  
Y. Tsue ◽  
J. da Providencia ◽  
C. Providencia ◽  
M. Yamamura ◽  
H. Bohr
Keyword(s):  
Spin Polarization ◽  
Quark Matter ◽  
High Density ◽  
Versus Color

Strange Quark Matter as Dark Matter

2019 ◽  
Vol 22 (4) ◽  
pp. 311-317
Author(s):  
Hidezumi Terazawa
Keyword(s):  
Dark Matter ◽  
Quark Matter ◽  
Strange Quark ◽  
Strange Quark Matter ◽  
Quark Stars

New forms of matter such as super-hypernuclei (strange quark matter) and superhypernuclear stars (strange quark stars) as candidates for dark matter are discussed in some detail, based on the so-called "Bodmer–Terazawa–Witten hypothesis" assuming that they are stable absolutely or quasi-stable (decaying only weakly).

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