2,995 research outputs found
Lattice-Renormalization of the Polyakov Loop
No full textZantow F. Lattice-Renormalization of the Polyakov Loop. Bielefeld: Fakultät für Physik; 2003
Monopolos magnéticos Z2 em teorias de Yang-Mills-Higgs com simetria de gauge SU(n)
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-graduação em FísicaMonopolos magnéticos têm sido objetos de grande interesse nos últimos anos, principalmente por serem previstos em algumas teorias de grande unificação e por, possivelmente, serem relevantes no fenômeno do confinamento em QCD. Consideramos uma teoria de Yang-Mills-Higgs com simetria de gauge SU(n) quebrada espontaneamente em SO(n) que apresenta condições topológicas necessárias para a existência de monopolos Z2. Construímos as formas assintóticas desses monopolos, considerando duas quebras distintas do SU(n) em SO(n), e verificamos que os monopolos fundamentais estão associados aos pesos da representação definidora da álgebra so(n)v
Three Paradigms of Juridical Knowledge: to Anniversary of Professor A. V. Polyakov
No full textArticle is dedicated to the 60-year anniversary of the professor of the chair of theory and law history and state of St. Petersburg State University, doctor of juridical sciences Andrey Vasilyevich Polyakov. In the article are analyzed some basic ideas of the communicative theory of law, creator of which is A. V. Polyakov. In this case the communicative theory of law by A. V. Polyakov it is considered in context of the processes, which characterize the development of the juridical science, by which, as for any other sciences, is inherent the sequential change of the paradigms of knowledge. In the article are separated three such paradigms, namely pre-classical, classical and postclassical. The author assumes that ideas of A. V. Polyakov, who is the best-known representative of the post-classical theory of law in Russia, they stimulate the change of the paradigms of lawful knowledge and thus contribute to overcoming crisis phenomena in the juridical science
Integral formulas on projective space and the radon transform of Gindikin-Henkin-Polyakov
No full textWe construct a variant of Koppelman's formula for (0, q)-forms with values in a line bundle, 0 (l), on projective space. The formula is then applied to a study of a Radon transform for (0, q) -forms, introduced by Gindikin-Henkin-Polyakov. Our presentation follows along the basic lines of Henkin-Polyakov [3], with some simplifications
Geração radiativa de repulsão vetorial para quarks leves
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-Graduação em Física, Florianópolis, 2014Abstract: We apply a non-perturbative analytical method, known as the Optimized PerturbationTheory (OPT), to the Polyakov-Nambu-Jona-Lasinio (PNJL) model in order to investigate physical quantities associated with the QCD phase transitions. We consider the Taylor expansion of the pressure in powers of µ/T obtaining the second cumulant (c2) which is associated to the quark number susceptibility. We discuss how the OPT nite Nc radiative (quantum) corrections induce a contribution to the pressure which behaves as a vector repulsion even when such a channel is absent in the original classical potential. Our results are then compared with the ones furnished by lattice QCD simulations and by the large-Nc approximation showing that, physically, the OPT results resemble those furnished by the latter approximation when a repulsive vector channel is explicitly included in the classical potential. In this case, both approximations fail to correctly describe the Stefan-Boltzmann limit at high temperatures. We discuss how this problem can be circumvented by taking the couplings to be temperature dependent so as to simulate the phenomenon of asymptotic freedom. Since this is the first time the OPT is applied to the PNJL we also discuss many technicalities associated with the evaluation of two loop (exchange) diagrams.Neste trabalho o método analítico não perturbativo conhecido como Teoria de Perturbação Otimizada (OPT) é aplicada ao modelo de Polyakov-Nambu-Jona-Lasinio (PNJL) para que quantidades físicas, associadas com as transições de fase da QCD, possam ser calculadas. A expansão da pressão em potências de µ/T é considerada para obter o segundo cumulante (c2) que é uma quantidade relacionada com a susceptibilidade do número de quarks. Primeiramente discutimos como as correções radiativas de Nc finito geradas pela OPT produzem uma contribuição que se comporta como um termo vetorial repulsivo mesmo quando este tipo de canal está ausente no potencial clássico original. Em seguida, nossos resultados são comparados com aqueles fornecidos pelas simulações na rede e também pela aproximação de Nc grande(LN). Fisicamente, os resultados da OPT são similares aqueles fornecidos pela aproximação LN quando um canal vetorial repulsivo é explicitamente incluido no potencial clássico. Neste caso, nenhuma destas aproximações analíticas produz corretamente o limite de Stefan Boltzmann para altas temperaturas. Contudo, nossos resultados sugerem como estes problemas podem ser contornados tomando-se as constantes de acoplamento como sendo dependentes da temperatura, de maneira que o fenômeno da liberdade assimptótica possa ser simulado. Esta é a primeira vez que a OPT é aplicada ao modelo de PNJL e por isto vários aspectos técnicos relacionados com o cálculo de diagramas de dois laços são também aqui apresentados
Improved implementation of the Alicki–Van Ryn nonclassicality test for a single particle using Si detectors
No full textRecently a test of nonclassicality for a single qubit was proposed [R. Alicki and N. Van Ryn, J. Phys. A: Math. Theor. 41, 062001 (2008)]. We present an optimized experimental realization of this test leading to a 46 standard deviation violation of classicality. This factor of 5 improvement over our previous result was achieved by moving from the infrared to the visible where we can take advantage of higher efficiency and lower noise photon detectors
UV laser-induced electron emission from diamond films coated with ultra thin nickel layer
No full textGeneral theory of law in the integrate context: the continuation of the dialogue (devoted to the second edition of the manual A. V. Polyakov “General theory of law: problems of interpretation in the context of the communicative approach”)
No full textOn the one hand, the author appreciates the integrate and communicative approaches, developed by
A. V. Poyakov. On the other hand, the author considers it necessary to continue the dialogue about
these approaches with a view to their improvement, as well as the dialogue on the problems and the
prospects of the Russian theory of law in the light of these approaches. The reason for the article was
the release of the second edition of the textbook of A. V. Polyakov “General theory of law. A course
of lectures”. It is examined the relevance of this edition. This relevance is due to persistence in the
general theory of law of dominant positions of statism, positivism, as well as the theory of natural law.
Both that, and another, and the third significantly limits the legal communication, makes it imperfect.
The author examines the philosophical and methodological novelty, as well as the advantages of the
A. V. Polyakov`s tutorial in light of accents made the new edition. Chief among those accents is the
concept of a full-featured legal communication. It is explored the question, why the communicative
theory of law among Russian scientists caused and continues to cause negative assessments and sharp
criticism. The reasons for such assessments include a one-sided attention to “postclassical” provisions
and ignoring the neoclassical provisions that complement the latter in the works of A. V. Polyakov. The
article contains suggestions for improving the integrate and communicative approaches. The most
appropriate form of implementation of these suggestions, is an updated version of the system presentation
of communicative theory of law in the form of a textbook or monograph. Refs 28
JETP Letters V. 68, I .08
No full textJETP Letters -- October 25, 1998
Volume 68, Issue 8, pp. 629-684
FIELDS, PARTICLES, AND NUCLEI
Inhibition of the radioactive decay of the isomer 119mSn with the use of Mössbauer backscattering
S. K. Godovikov
Full Text: PDF (75 kB)
Predictions for the forward cone in diffractive deep inelastic scattering
N. N. Nikolaev, A. V. Pronyaev, and B. G. Zakharov
Full Text: PDF (131 kB)
ATOMS, SPECTRA AND RADIATION
Spontaneous emission from an atomic oscillator located near an ideally conducting conical surface
V. V. Klimov
Full Text: PDF (107 kB)
On resonance processes in near-threshold excitation of the resonance lines of a Zn+ ion in electron–ion collisions
A. I. Imre, A. N. Gomonai, V. S. Vukstich, and A. N. Nemet
Full Text: PDF (77 kB)
CONDENSED MATTER
Giant nonlinear optical activity in an aggregated silver nanocomposite
V. P. Drachev, S. V. Perminov, S. G. Rautian, and V. P. Safonov
Full Text: PDF (101 kB)
Low-temperature specific heat of crystalline and amorphous Eu2(MoO4)3
A. V. Pal'nichenko, E. G. Ponyatovskii, B. S. Red'kin, and V. V. Sinitsyn
Full Text: PDF (58 kB)
Self-excitation of 2D plasmons in resonant tunneling diodes
M. N. Feiginov and V. A. Volkov
Full Text: PDF (100 kB)
Magnetoexcitons in type-II quantum dots
A. B. Kalameitsev, V. M. Kovalev, and A. O. Govorov
Full Text: PDF (83 kB)
Mesoscopic superconductivity in superspace
A. F. Andreev
Full Text: PDF (101 kB)
MISCELLANEOUS
Fractal structure of the phase equilibrium curve of a system of two oscillating magnetic moments
F. V. Lisovskii and O. P. Polyakov
Full Text: PDF (82 kB)Archived web conten
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