57 citations · 109 across the 3 of their papers we have counts for
5 papers
Hybrid chiral condensate in the external magnetic field
Kazuya Nishiyama, Shintaro Karasawa, Toshitaka Tatsumi
We study the phase diagram of the Nambu-Jona-Lasinio model in the external magnetic field within the mean-field approximation, taking into account the inhomogeneous chiral condensa…
Novel Lifshitz point for chiral transition in the magnetic field
T. Tatsumi, K. Nishiyama, S. Karasawa
Based on the generalized Ginzburg-Landau theory, chiral phase transition is discussed in the presence of magnetic field. Considering the chiral density wave we show chiral anomaly…
Nambu-Goldstone bosons and the Higgs mechanism without Lorentz invariance: Analysis based on constrained-system theory
Shinya Gongyo, Shintaro Karasawa
First, we develop the counting rule for Nambu-Goldstone bosons to the system including two-time derivative terms. In this case, the type-II Nambu-Goldstone bosons may appear along…
Inhomogeneous chiral phase in the magnetic field
T. Tatsumi, K. Nishiyama, S. Karasawa
Inhomogeneous chiral phase is discussed in the presence of the magnetic field. A topological aspect is pointed out for the complex order parameter, in relation to the spectral asym…
Variational approach to the inhomogeneous chiral phase in quark matter
S. Karasawa, T. Tatsumi
The inhomogeneous chiral phase is discussed in QCD at finite temperature and/or density. We study the phase diagram on the density-temperature plane by taking into account the effe…