3,455 research outputs found
Chiral magnetic effect in the PNJL model
We study the two-flavor Nambu--Jona-Lasinio model with the Polyakov loop
(PNJL model) in the presence of a strong magnetic field and a chiral chemical
potential which mimics the effect of imbalanced chirality due to QCD
instanton and/or sphaleron transitions. Firstly we focus on the properties of
chiral symmetry breaking and deconfinement crossover under the strong magnetic
field. Then we discuss the role of on the phase structure. Finally the
chirality charge, electric current, and their susceptibility, which are
relevant to the Chiral Magnetic Effect, are computed in the model.Comment: Some reference added. Minor revisions. One figure added. To appear on
Phys. Rev.
Chiral magnetic effect in the PNJL model
We study the two-flavor Nambu--Jona-Lasinio model with the Polyakov loop
(PNJL model) in the presence of a strong magnetic field and a chiral chemical
potential which mimics the effect of imbalanced chirality due to QCD
instanton and/or sphaleron transitions. Firstly we focus on the properties of
chiral symmetry breaking and deconfinement crossover under the strong magnetic
field. Then we discuss the role of on the phase structure. Finally the
chirality charge, electric current, and their susceptibility, which are
relevant to the Chiral Magnetic Effect, are computed in the model.Comment: Some reference added. Minor revisions. One figure added. To appear on
Phys. Rev.
Performance of the WaveBurst algorithm on LIGO data
In this paper we describe the performance of the WaveBurst algorithm which
was designed for detection of gravitational wave bursts in interferometric
data. The performance of the algorithm was evaluated on the test data set
collected during the second LIGO Scientific run. We have measured the false
alarm rate of the algorithm as a function of the threshold and estimated its
detection efficiency for simulated burst waveforms.Comment: proceedings of GWDAW, 2003 conference, 13 pages, 6 figure
Magnetic Susceptibility of the Quark Condensate and Polarization from Chiral Models
We compute the magnetic susceptibility of the quark condensate and the
polarization of quarks at zero temperature and in a uniform magnetic
background. Our theoretical framework consists of two chiral models that allow
to treat self-consistently the spontaneous breaking of chiral symmetry: the
linear model coupled to quarks, dubbed quark-meson model, and the
Nambu-Jona-Lasinio model. We also perform analytic estimates of the same
quantities within the renormalized quark-meson model, both in the regimes of
weak and strong fields. Our numerical results are in agreement with the recent
literature; moreover, we confirm previous Lattice findings, related to the
saturation of the polarization at large fields.Comment: 13 pages, 4 figure
Exotic solutions in string theory
Solutions of classical string theory, correspondent to the world sheets,
mapped in Minkowsky space with a fold, are considered. Typical processes for
them are creation of strings from vacuum, their recombination and annihilation.
These solutions violate positiveness of square of mass and Regge condition. In
quantum string theory these solutions correspond to physical states |DDF>+|sp>
with non-zero spurious component.Comment: accepted in Il Nuovo Cimento A for publication in 199
Information technology managerial process modelling by difficult social and economic systems
В докладе рассматривается программный комплекс, который обеспечивает компьютерную поддержку основных процессов управления вузом. Программный комплекс, построенный по модульному принципу, позволяет получить полную картину состояния образовательного процесса вуза в разрезе преподавателей, кафедр, факультетов и направлений.In the report the program complex which provides computer support of the basic managerial processes by high school is considered. The program complex constructed by a modular principle, allows receiving a full picture of a condition of educational process of high school in a cut of teachers, chairs, faculties and directions
Construction technology and applications new educational technologies
The article discusses the various educational technologies that ensure the efficiency of training. Given in example use simulation exercises in the training seminar. Deliv-called a judgment that the introduction of new educational technologies should not be seen as an end in itself, but should be a tool that allows you to control the quality of the educational process and the quality of the results of that.В статье рассматриваются различные образовательные технологии, обеспечивающие повышение эффективности подготовки специалистов. Приводится пример использования имитационного упражнения в обучающем семинаре. Высказывается суждение о том, что внедрение новых образовательных технологий не должно рассматриваться как самоцель, а должно являться инструментом, который позволяет управлять качеством образовательного процесса и качеством результата
Innovative technology as a tool for formation of professional competence
В предлагаемом материале автором рассматриваются основные модели системы подготовки кадров с высшим профессиональным образованием: модель специалиста, модель содержания и формы образовательного процесса. Особое внимание уделяется инновационным технологиям, обеспечивающим высокое качество подготовки.In these materials the author examines the main models of training with higher education: a model professional, a model of content and form of the educational process. Particular attention is given to innovative technologies, providing high quality training
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