Ward identities and chiral anomalies for coupled fermionic chains
Coupledfermionicchainsareusuallydescribedbyaneffectivemodelwritteninterms of bonding and anti-bonding fermionic fields with linear dispersion in the vicinities therespectiveFermipoints.WederiveforthefirsttimeexactWardIdentities(WI) for this model, proving the existence of chiral anomalies which verify...
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Principais autores: | , , |
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Formato: | article |
Idioma: | English |
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AIP Publishing
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Endereço do item: | https://repositorio.ufrn.br/jspui/handle/123456789/29369 |
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Resumo: | Coupledfermionicchainsareusuallydescribedbyaneffectivemodelwritteninterms of bonding and anti-bonding fermionic fields with linear dispersion in the vicinities therespectiveFermipoints.WederiveforthefirsttimeexactWardIdentities(WI) for this model, proving the existence of chiral anomalies which verify the AdlerBardeen non-renormalization property. Such WI are expected to play a crucial role in the understanding of the thermodynamic properties of the system. Our results are non-perturbative and are obtained analyzing Grassmann functional integrals by means of constructive quantum field theory methods. C 2013 AIP Publishing LLC. |
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