Results 251 to 260 of about 161,256 (270)
Giant thermally induced band-gap renormalization in anharmonic silver chalcohalide antiperovskites.
J Mater Chem C MaterBenítez P +8 more
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1995
The notion of renormalization group is not well defined. It arises in theories in which a prominent role is played by scale invariance or covariance properties, of various quantities, with respect to a noninvertible transformation of coordinates.
BENFATTO, GIUSEPPE, Gallavotti, G.
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The notion of renormalization group is not well defined. It arises in theories in which a prominent role is played by scale invariance or covariance properties, of various quantities, with respect to a noninvertible transformation of coordinates.
BENFATTO, GIUSEPPE, Gallavotti, G.
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Operator renormalization group
Physical Review D, 1988We introduce a novel operator renormalization-group method. This is a new and more powerful variant of the t expansion combining that method with the real-space renormalization-group approach. The aim is to extract infinite-volume physics at t..-->..infinity from calculations of only a few powers of t.
Helen R. Quinn +3 more
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Il Nuovo Cimento, 1965
The origin of the renormalization group is re-examined and various applications of the theory are discussed. The attention is focused on the limitations of these methods, and it is found that supplementary conditions are required besides the group equations in order to get unique results. These additional conditions on the solutions form the very basis
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The origin of the renormalization group is re-examined and various applications of the theory are discussed. The attention is focused on the limitations of these methods, and it is found that supplementary conditions are required besides the group equations in order to get unique results. These additional conditions on the solutions form the very basis
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2017
The relation between the subtracted Green’s functions with different choices of subtraction point in the \(\phi ^4_4\) model. The running coupling constant. Functional equations of the renormalization group. Differential renormalization group equations of the Gell-Mann–Low and the Callan–Symanzik type. The \(\beta \) function.
Leszek Hadasz, Henryk Arodź
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The relation between the subtracted Green’s functions with different choices of subtraction point in the \(\phi ^4_4\) model. The running coupling constant. Functional equations of the renormalization group. Differential renormalization group equations of the Gell-Mann–Low and the Callan–Symanzik type. The \(\beta \) function.
Leszek Hadasz, Henryk Arodź
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Renormalizing the renormalization group pathologies
Physics Reports, 2001Abstract We review the status of the “pathologies” of the Renormalization Group (RG) encountered when one tries to define rigorously the RG transformation as a map between Hamiltonians. We explain their origin and clarify their status by relating them to the Griffiths’ singularities appearing in disordered systems; moreover, we suggest that the best ...
Jean Bricmont +2 more
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Teaching the renormalization group
American Journal of Physics, 1978The renormalization group theory of second-order phase transitions is described in a form suitable for presentation as part of an undergraduate statistical physics course.
Leo P. Kadanoff, Humphrey J. Maris
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1999
We now turn to the problem of renormalizing our field theory to all orders in perturbation theory. To this end, we shall define a flow of effective actions, by defining an effective action that depends on a scale parameter ∧. The differential equation obtained by applying ∂/∂∧ to the functional integral for the effective action is the renormalization ...
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We now turn to the problem of renormalizing our field theory to all orders in perturbation theory. To this end, we shall define a flow of effective actions, by defining an effective action that depends on a scale parameter ∧. The differential equation obtained by applying ∂/∂∧ to the functional integral for the effective action is the renormalization ...
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