### Central charges and effective action at finite temperature and density

### Abstract

The current algebra for gauge theories like QCD at finite temperature and density is studied. We start considering, the massless Thirring model at finite temperature and density, finding an explicit expression for the current algebra. The central charge only depends on the coupling constant and there are not new effects due to temperature and density. From this calculation, we argue how to compute the central charge for QCD4 and we argue why the central charge in four dimensions could be modified by finite temperature and density.

### Más información

Título según WOS: | Central charges and effective action at finite temperature and density |

Título según SCOPUS: | Central charges and effective action at finite temperature and density |

Título de la Revista: | MODERN PHYSICS LETTERS A |

Volumen: | 19 |

Número: | 3 |

Editorial: | WORLD SCIENTIFIC PUBL CO PTE LTD |

Fecha de publicación: | 2004 |

Página de inicio: | 223 |

Página final: | 238 |

Idioma: | English |

DOI: |
10.1142/S0217732304012952 |

Notas: | ISI, SCOPUS |