Krein Regularization of λϕ 4
نویسندگان
چکیده
منابع مشابه
N ov 2 00 1 Breakdown of regularization scheme equivalence in massive λφ 4 theory
Through a two loop self-energy diagram in massive λφ4 theory, we demonstrated that the equivalence between dimensional regularization (DR) and cut-off regularization yield broke down in contrast to the conventional expectation. Then we employed a differential equation approach to aid the analysis and the result obtained in this approach also showed disagreement with DR. The disagreement or in-e...
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We present a numerical study of the λφ 4 model in three Euclidean dimensions, where the two spatial coordinates are non-commutative (NC). We first show the explicit phase diagram of this model on a lattice. The ordered regime splits into a phase of uniform order and a " striped phase ". Then we discuss the dispersion relation, which allows us to introduce a dimensionful lattice spacing. Thus we...
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The one-component λφ 4 theory in four dimensions in the spontaneously broken symmetry phase has a non-trivial non-perturbative sector which can be studied by means of a duality transformation of its Ising limit. Duality maps this theory to a model of interacting membranes. Physical states correspond to membrane excitations. The way this non-perturbative behaviour can be reconciled with the triv...
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Off-shellness and inhomogeneities in the non-equilibrium dynamics of the λϕ 4 model are studied. The non equilibrium field theory is developed in the Closed Time Path formalism, which is in turn reformulated as a kinetic field theory, in terms of a set of kinetic equations for the 2-point Green function, derived from a generalized effective action functional. We take into account all initial co...
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ژورنال
عنوان ژورنال: International Journal of Theoretical Physics
سال: 2011
ISSN: 0020-7748,1572-9575
DOI: 10.1007/s10773-011-1026-1