Oct, 2008
Canonical partition function and finite density phase transition in lattice QCD
PHYSICAL REVIEW D
- Volume
- 78
- Number
- 7
- First page
- 74507
- Last page
- Language
- English
- Publishing type
- Research paper (scientific journal)
- DOI
- 10.1103/PhysRevD.78.074507
- Publisher
- AMER PHYSICAL SOC
We discuss the nature of the phase transition for lattice QCD at finite temperature and density. We propose a method to calculate the canonical partition function by fixing the total quark number introducing approximations allowed in the low density region. An effective potential as a function of the quark number density is discussed from the canonical partition function. We analyze data obtained in a simulation of two-flavor QCD using p4-improved staggered quarks with bare quark mass m/T=0.4 on a 16(3)x4 lattice. The results suggest that the finite density phase transition at low temperature is of first order.
- Link information
- ID information
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- DOI : 10.1103/PhysRevD.78.074507
- ISSN : 2470-0010
- eISSN : 2470-0029
- Web of Science ID : WOS:000260574800076