3 papers
hep-ph2002
Symmetry structure and phase transitions
Ashok Goyal, Meenu Dahiya, Deepak Chandra
We study chiral symmetry structure at finite density and temperature in the presence of external magnetic field and gravity, a situation relevant in the early Universe and in the c…
hep-ph2000
NJL model in Four Dimension at Finite Temperature, Chemical Potentialand Curvature
Ashok Goyal, Meenu Dahiya
Two flavor Nambu-Jona-Lasinio model with N components is studied in curved space time at finite temperature and density in the leading 1/N expansion. In four space time dimension t…
hep-ph1999
Chiral symmetry in linear Sigma model in magnetic environment
Ashok Goyal, Meenu Dahiya
We study the chiral symmetry structure in a linear sigma model with fermions in the presence of an external, uniform magnetic field in the 'effective potential' approach at the one…