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Título:
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Phase diagram and quasiparticles of a lattice SU(2) scalar-fermion model in 2+1 dimensions
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Autores:
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Alonso, J.L. ;
Boucaud, Ph. ;
Martín Mayor, Víctor ;
van der Sijs, A.J.
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Tipo de documento:
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texto impreso
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Editorial:
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Amer Physical Soc, 2000-02-01
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Física-Modelos matemáticos
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Tipo = Artículo
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Resumen:
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The phase diagram at zero temperature of a lattice SU(2) scalar-fermion model in 211 dimensions is studied numerically and with mean-field methods. Special attention is devoted to the strong coupling regime. We have developed a new method to adapt the hybrid Monte Carlo algorithm to the O(3) non-linear ? model constraint. The charged excitations in the various phases are studied at the mean-field level. Bound states of two charged fermions are found in a strongly coupled paramagnetic phase. On the other hand, in the strongly coupled antiferromagnetic phase fermionic excitations around momenta (±?/2, ±?/2, ±?/2) emerge.
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En línea:
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https://eprints.ucm.es/46784/1/Mart%C3%ADnMayorV%20LIBRE%2033.pdf
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