| HAL : hal-00181104, version 1 |
| arXiv : 0710.0376 |
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| Equivalence of QCD in the epsilon-regime and chiral Random Matrix Theory with or without chemical potential |
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| Francesco BasileGernot Akemann 1 |
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| (11/10/2007) |
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| We prove that QCD in the epsilon-regime of chiral Perturbation Theory is equivalent to chiral Random Matrix Theory for zero and both non-zero real and imaginary chemical potential mu. To this aim we prove a theorem that relates integrals over fermionic and bosonic variables to super-Hermitian or super-Unitary groups also called superbosonization. Our findings extend previous results for the equivalence of the partition functions, spectral densities and the quenched two-point densities. We can show that all k-point density correlation functions agree in both theories for an arbitrary number of quark flavors, for either mu=0 or mu=/=0 taking real or imaginary values. This implies the equivalence for all individual k-th eigenvalue distributions which are particularly useful to determine low energy constants from Lattice QCD with chiral fermions. |
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| 1 : | Centre de Physique Théorique (CPT) |
| CNRS : FR2291 – Université de Provence - Aix-Marseille I – Université de la Méditerranée - Aix-Marseille II – Université Sud Toulon Var | |
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| Domaine | : | Mathématiques/Physique mathématique Physique/Physique mathématique Physique/Physique des Hautes Energies - Réseau Physique/Physique des Hautes Energies - Théorie |
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| Lien vers le texte intégral : |
| hal-00181104, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00181104 | |
| oai:hal.archives-ouvertes.fr:hal-00181104 | |
| Contributeur : Elizabeth Bernardo | |
| Soumis le : Mardi 23 Octobre 2007, 11:02:16 | |
| Dernière modification le : Mardi 23 Octobre 2007, 11:02:16 | |