Modern Physics Letters A

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SURPRISES IN NONPERTURBATIVE DYNAMICS IN σ-MODEL AT FINITE DENSITY
Modern Physics Letters A - Tập 19 Số 18 - Trang 1341-1356 - 2004
V. P. Gusynin, V. A. Miransky, I. A. Shovkovy
The linear SU (2)L× SU (2)R σ-model occupies a unique place in elementary particle physics and quantum field theory. It has been recently realized that when a chemical potential for hypercharge is added, it becomes a toy model for the description of the dynamics of the kaon condensate in high density QCD. We review recent results in nonperturbativ...... hiện toàn bộ
LANDAU-GINZBURG TOPOLOGICAL THEORIES IN THE FRAMEWORK OF GKM AND EQUIVALENT HIERARCHIES
Modern Physics Letters A - Tập 08 Số 11 - Trang 1047-1061 - 1993
S. Kharchev, A. Marshakov, А. Миронов, А. Морозов
We consider the deformations of "monomial solutions" to generalized Kontsevich. model1,2 and establish the relation between the flows generated by these deformations with those of N = 2 Landau-Ginzburg topological theories. We prove that the partition function of a generic generalized Kontsevich model can be presented as a product of some "quasiclassical" factor and n...... hiện toàn bộ
CANONICAL QUANTIZATION AND MASS SPECTRUM OF RELATIVISTIC PARTICLE ANALOGUE OF RELATIVISTIC STRING WITH RIGIDITY
Modern Physics Letters A - Tập 03 Số 13 - Trang 1299-1308 - 1988
Mikhail S. Plyushchay
The generalized model of relativistic particle is studied. Its action contains the term for a free particle of mass m together with an additional term proportional to the curvature of its world trajectory. From the full set of Hamiltonian constraints, the mass shell condition is singled out and canonical quantization of the model is performed. The quantized system is shown to be equivalen...... hiện toàn bộ
GAMOW–TELLER STRENGTH IN THE A = 4 SYSTEM
Modern Physics Letters A - Tập 24 Số 11n13 - Trang 867-870 - 2009
A. Tamii, T. Adachi, H. Fujita, Y. Fujita, K. Hatanaka, Emiko Hiyama, D. Ishikawa, T. Kawabata, Nguyễn Tuấn Khải, Hiroaki Matsubara, Takayuki Myo, Yoko Ogawa, H. Okamura, Yee Yee Oo, H. Sakaguchi, Y. Shimbara, K. Suda, H. Toki, M. Yosoi
Gamow–Teller states, possibly with narrow widths, have been searched for by the 4 He (3 He , t) reaction with an energy resolution of 100 keV. The search is motivated by theoretical discussions on the role of pions in nuclear structure and simulation of supernovae explosion. In the preliminary analysis of the spectrum at around 0°, no significant ...
MATRIX MODEL PERTURBED BY HIGHER ORDER CURVATURE TERMS
Modern Physics Letters A - Tập 07 Số 33 - Trang 3081-3100 - 1992
G.P. Korchemsky
The critical behavior of the D=0 matrix model with the potential perturbed by a nonlocal term generating touchings between random surfaces is studied. It is found that the phase diagram of the model has many features of the phase diagram of discretized Polyakov’s bosonic string with higher order curvature terms included. It contains the phase of smooth (Liouville) surfaces, the intermedia...... hiện toàn bộ
THE TOPOLOGICAL CP1 MODEL AND THE LARGE-N MATRIX INTEGRAL
Modern Physics Letters A - Tập 09 Số 31 - Trang 2893-2902 - 1994
Tohru Eguchi, Sung-Kil Yang
We discuss the topological CP 1 model which consists of the holomorphic maps from Riemann surfaces onto CP 1. We construct a large-N matrix model which reproduces precisely the partition function of the CP 1 model at all genera of Riemann surfaces. The action of our matrix model has the form [Formula: see text] where M is an N...... hiện toàn bộ
IMPROVED SUPERGEOMETRIES FOR TYPE-II GREEN-SCHWARZ NONLINEAR σ-MODELS
Modern Physics Letters A - Tập 04 Số 21 - Trang 1985-1998 - 1989
Stefano Bellucci, S. James Gates, B. Radak, Sh. I. Vashakidze
New supergeometries which are tailored to simplify calculations of the one-loop quantum corrections of Green-Schwarz nonlinear σ-models are described.
EXTREME DYONIC BLACK HOLES IN STRING THEORY
Modern Physics Letters A - Tập 11 Số 09 - Trang 689-713 - 1996
Arkady A. Tseytlin
Supersymmetric extreme dyonic black holes of toroidally compactified heterotic or type-II string theory can be viewed as lower-dimensional images of solitonic strings wound around a compact dimension. We consider conformal sigma models which describe string configurations corresponding to various extreme dyonic black holes in four and five dimensions. These conformal models have regular s...... hiện toàn bộ
FUSION RULES FOR THE FRACTIONAL LEVEL $\widehat{{\rm sl}(2)}$ ALGEBRA
Modern Physics Letters A - Tập 07 Số 13 - Trang 1185-1195 - 1992
Hidetoshi Awata, Yasuhiko Yamada
We derive, as the condition for the null vector decoupling, the fusion rules for the [Formula: see text] algebra with fractional level, which have an interesting structure related to affine Weyl transformation. It is shown that, to get non-trivial fusion rules, we must include the primary field which belongs to neither the highest nor the lowest weight representations.
IS THE t QUARK RESPONSIBLE FOR THE MASS OF W AND Z BOSONS?
Modern Physics Letters A - Tập 04 Số 11 - Trang 1043-1053 - 1989
V. A. Miransky, Masaharu Tanabashi, Koichi Yamawaki
Based on the dynamical model having a large anomalous dimension γm≃2, we propose that the t quark condensate is responsible for the mass of W and Z bosons within the framework of the SU (3)C×SU(2)L×U(1)Y gauge theory (without Higgs) plus four-fermion interactions among quarks and lepto...... hiện toàn bộ
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