Responses of quark condensates to the chemical potential
O. Miyamura, S. Choe, Y. Liu, T. Takaishi, and A. Nakamura
TL;DR
This paper investigates how quark condensates respond to changes in chemical potential across different temperatures using the NJL model, comparing results with lattice QCD simulations to understand hadron behavior at finite density.
Contribution
It provides a comparative analysis of quark condensate responses to chemical potential using the NJL model and lattice QCD, highlighting their qualitative agreement.
Findings
NJL model and lattice QCD show similar qualitative behavior
Responses vary with temperature and chemical potential
Above T_c, more complex analysis is needed
Abstract
The responses of quark condensates to the chemical potential, as a function of temperature T and chemical potential \mu, are calculated within the Nambu--Jona-Lasinio (NJL) model. We compare our results with those from the recent lattice QCD simulations [QCD-TARO Collaboration, Nucl. Phys. B (Proc. Suppl.) 106, 462 (2002)]. The NJL model and lattice calculations show qualitatively similar behavior, and they will be complimentary ways to study hadrons at finite density. The behavior above T_c requires more elaborated analyses.
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