Nonperturbative effective-field theory for two-leg antiferromagnetic spin ladders

We study the long wavelength limit of a spin-½ Heisenberg antiferromagnetic two-leg ladder, treating the interchain coupling in a nonperturbative way. We perform a mean ﬁeld analysis and then include the ﬂuctuations in an exact way. This allows for a discussion of the phase diagram of the system and...

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Detalles Bibliográficos
Autores principales:	Cabra, Daniel Carlos, Dobry, Ariel Oscar, Rossini, Gerardo Luis
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2001
Materias:	Ciencias Exactas Física antiferromagnetic Heisenberg spin ladders field theory
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/104431 http://hdl.handle.net/11336/98120 https://journals.aps.org/prb/abstract/10.1103/PhysRevB.63.144408
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

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