Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Adolfo P C Malbouisson"'
This monograph presents recent developments in quantum field theory at finite temperature. By using Lie groups, ideas from thermal theory are considered with concepts of symmetry, allowing for applications not only to quantum field theory but also to
Autor:
Adolfo P. C. Malbouisson
Publikováno v:
Journal of Applied Mathematics and Physics. 10:3601-3615
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a706de41881ce1ea94e8c0ed99882717
https://doi.org/10.4236/jamp.2022.1012239
https://doi.org/10.4236/jamp.2022.1012239
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 77, Iss 10, Pp 1-9 (2017)
European Physical Journal
European Physical Journal
A scalar model is built, as a quantum field theory defined on a toroidal topology, to describe a phase transition in films subjected to periodic boundary conditions and influenced by an external and constant magnetic field. Criticality is studied and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::416902d7bf2ac7d19f6f7317fef396ec
https://doi.org/10.1140/epjc/s10052-017-5301-z
https://doi.org/10.1140/epjc/s10052-017-5301-z
Publikováno v:
International Journal of Modern Physics A. 23:1089-1103
We show in this paper how to construct Symanzik polynomials and the Schwinger parametric representation of Feynman amplitudes for gauge theories in an unspecified covariant gauge. The complete Mellin representation of such amplitudes is then establis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fcec1e62ad0adae19180616b793ceb5f
https://doi.org/10.1142/s0217751x08039402
https://doi.org/10.1142/s0217751x08039402
Publikováno v:
Physica A: Statistical Mechanics and its Applications. 387:817-824
In this paper, we study the multicritical behavior of the Ginzburg–Landau model in a O ( n 1 ) ⊕ O ( n 2 ) -symmetric version containing ( n 1 / 2 + n 2 / 2 ) -complex order parameters coupled to a gauge field. We develop the RG analysis at a one
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::81fce0da1caf45014af53899b0f99bb9
https://doi.org/10.1016/j.physa.2007.09.033
https://doi.org/10.1016/j.physa.2007.09.033
Autor:
H. Queiroz, Faqir C. Khanna, J. M. C. Malbouisson, Ademir E Santana, Adolfo P C Malbouisson, T.M. Rocha-Filho, J. C. da Silva
Publikováno v:
Physics Letters B. 624:316-323
We study the N-component ( 2 + 1 ) -dimensional Gross–Neveu model bounded between two parallel planes separated by a distance L at finite temperature T. From the four-point function, we obtain a closed expression for the large-N effective coupling
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5bec623971a3888d9eeee837b131b738
https://doi.org/10.1016/j.physletb.2005.08.020
https://doi.org/10.1016/j.physletb.2005.08.020
Publikováno v:
Modern Physics Letters A. 20:965-975
In a field theoretical framework, we study the N-component Ginzburg–Landau model compactified in one of the spatial dimensions. Taking the large-N limit, including one-loop corrections to the coupling constant, we calculate the transition temperatu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c306f2b83bfea1fafa3e3f0100d4644
https://doi.org/10.1142/s0217732305017214
https://doi.org/10.1142/s0217732305017214
Publikováno v:
The European Physical Journal B - Condensed Matter. 37:515-522
In this paper we consider a superconducting film modeled by the Ginzburg-Landau model, confined between two parallel planes a distance $L$ apart from one another. Our approach is based on the Gaussian effective potential in the transverse unitarity g
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b4f3271424e69faa7caf9dd63df16117
https://doi.org/10.1140/epjb/e2004-00088-x
https://doi.org/10.1140/epjb/e2004-00088-x
Publikováno v:
Physics Letters A. 318:406-411
In a field theoretical context, we consider the effective potential associated to the Ginzburg–Landau model compactified in one of the spatial dimensions. We are able to determine the dependence of the transition temperature ( T c ) for a system co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2b4cbb0f2c91bffeab41beb7504a7997
https://doi.org/10.1016/j.physleta.2003.09.053
https://doi.org/10.1016/j.physleta.2003.09.053
Publikováno v:
Nuclear Physics B. 631:83-94
We consider the massive vector $N$-component $(\lambda\phi^{4})_{D}$ theory in Euclidian space and, using an extended Matsubara formalism we perform a compactification on a $d$-dimensional subspace, $d\leq D$. This allows us to treat jointly the effe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f276c4a5856426604c6b474750ba82b5
https://doi.org/10.1016/s0550-3213(02)00218-3
https://doi.org/10.1016/s0550-3213(02)00218-3