Results 181 to 190 of about 2,214 (215)
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Regularization and Renormalization of the Vacuum Energy
2009AbstractThis chapter uses the method of heat kernel expansion together with cutoff regularization to separate the divergent part of the vacuum energy. After the vacuum energy has been regularized, the procedure of renormalization is considered. The divergent contributions have a structure which allows their removal by a redefinition of the parameters ...
Vladimir Mostepanenko +2 more
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Intrinsic Loop Regularization and Renormalization in QED
Communications in Theoretical Physics, 1995We show how to regularize and renormalize the QED at the one-loop order by means of the intrinsic loop regularization method proposed by the authors. All the results are the same as those derived by means of other regularization methods.
Zhong-Hua Wang, Han-Ying Guo
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Vertex renormalization, regularization and inhomogeneous flows
AIP Conference Proceedings, 2010We describe a propagator renormalized, non‐Markovian closure for inhomogeneous turbulent flows with particular emphasis on the role of the bare vertex terms. We outline a regularization procedure as an approximation to a formal vertex renormalization and comment on numerical and analytic investigations to higher order corrections.
Terence J. OKane +3 more
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Regularization and renormalization of four-fermion theories
Physical Review D, 1980We regularize local four-fermion interactions in four dimensions by considering them as the limit of nonlocal, nonpolynomial, fermion interactions. Terms that vanish formally in this limit contribute, however, to the renormalization of induced bosonic excitations.
Herman J. Munczek, Adolfo M. Nemirovsky
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Regularization and renormalization of a massive vector field in a Friedman metric
Il Nuovo Cimento A, 1982A regularized and renormalized massive-vector-field theory in a Friedmann space-time is formulated. A comparison with the scalar (and spinor) cases is performed. This formulation may be of some relevance for the very early phases of the expansion of the Universe in relation with the possibility that gauge field quanta are created because of curvature ...
MATARRESE, SABINO +1 more
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Analytic Regularization and Renormalization of Nonperturbation Theories
1983Quantum field theories suffer from infinities. In perturbation theories, these infinities manifest themselves as ultraviolet (UV) divergences in Feynman integrals. In massless theories, there are also Infrared (IR) divergences to contend with. In perturbation expansion, the order-by-order removal of these infinities - the renormalization program1) - is
H. C. Lee, M. S. Milgram
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Renormalization group in the framework of analytic regularization
Il Nuovo Cimento A, 1975A derivation of renormalization group equations in the framework of analytic regularization is presented for scalar field theory withgϕ4-interaction.
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Uniqueness of renormalized quantities in dimensional regularization
Physical Review D, 1976It is proved that in any order of perturbation expansion the dimensionally regularized Feynman integration may be multiplied by an arbitrary analytic function of the space-time dimension, which can be absorbed in the redefinition of the bare coupling constants so that the finite renormalized quantities are unchanged.
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