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Progress of Theoretical Physics最新文献

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On Static Charged Black Holes in Type IIA on a Nearly-Kähler Coset Nearly-Kähler Coset上IIA型静态带电黑洞的研究
Progress of Theoretical Physics Pub Date : 2012-03-07 DOI: 10.1143/PTP.128.873
T. Kimura
{"title":"On Static Charged Black Holes in Type IIA on a Nearly-Kähler Coset","authors":"T. Kimura","doi":"10.1143/PTP.128.873","DOIUrl":"https://doi.org/10.1143/PTP.128.873","url":null,"abstract":"We study static, spherically symmetric black hole solutions in four-dimensional N=2 gauged supergravity with one vector multiplet and one hyper-tensor multiplet. This is derived from massive type IIA theory compactified on the nearly-Kahler coset space G2/SU(3). It is well-known that the Romans' mass parameter yields the Stuckelberg-type deformation of the gauge field strengths in the four-dimensional system. This deformation requires that all the (covariant) derivatives of the scalar fields must vanish and the two-form field is closed. It turns out that charged solutions are forbidden. This implies that only AdS vacua or Schwarzschild-AdS black holes are allowed as the static, spherically symmetric solutions.","PeriodicalId":49658,"journal":{"name":"Progress of Theoretical Physics","volume":"128 1","pages":"873-885"},"PeriodicalIF":0.0,"publicationDate":"2012-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1143/PTP.128.873","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64016529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
The Importance of the Ising Model 伊辛模型的重要性
Progress of Theoretical Physics Pub Date : 2012-03-07 DOI: 10.1143/PTP.127.791
B. McCoy, J. Maillard
{"title":"The Importance of the Ising Model","authors":"B. McCoy, J. Maillard","doi":"10.1143/PTP.127.791","DOIUrl":"https://doi.org/10.1143/PTP.127.791","url":null,"abstract":"Understanding the relationship which integrable (solvable) models, all of which possess very special symmetry properties, have with the generic non-integrable models that are used to describe real experiments, which do not have the symmetry properties, is one of the most fundamental open questions in both statistical mechanics and quantum field theory. The importance of the two-dimensional Ising model in a magnetic field is that it is the simplest system where this relationship may be concretely studied. We here review the advances made in this study, and concentrate on the magnetic susceptibility which has revealed an unexpected natural boundary phenomenon. When this is combined with the Fermionic representations of conformal characters, it is suggested that the scaling theory, which smoothly connects the lattice with the correlation length scale, may be incomplete for H � =0 . Subject Index: 010, 040","PeriodicalId":49658,"journal":{"name":"Progress of Theoretical Physics","volume":"127 1","pages":"791-817"},"PeriodicalIF":0.0,"publicationDate":"2012-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1143/PTP.127.791","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64010815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 29
Destabilizing Tachyonic Vacua at or above the BF Bound 达到或超过BF边界的不稳定速子真空
Progress of Theoretical Physics Pub Date : 2012-03-03 DOI: 10.1143/PTP.128.213
S. Kanno, M. Sasaki, J. Soda
{"title":"Destabilizing Tachyonic Vacua at or above the BF Bound","authors":"S. Kanno, M. Sasaki, J. Soda","doi":"10.1143/PTP.128.213","DOIUrl":"https://doi.org/10.1143/PTP.128.213","url":null,"abstract":"It is well known that tachyonic vacua in an asymptotically Anti-de Sitter (AdS) spacetime are classically stable if the mass squared is at or above the Breitenlohner and Freedman (BF) bound. We study the quantum stability of these tachyonic vacua in terms of instantons. We find a series of exact instanton solutions destabilizing tachyonic state at or above the BF bound in asymptotically AdS space. We also give an analytic formula for the decay rate and show that it is finite. Comparing our result with the well-known algebraic condition for the stability, we discuss stability conditions of tachyonic vacua at or above the BF bound. Subject Index: 135, 454","PeriodicalId":49658,"journal":{"name":"Progress of Theoretical Physics","volume":"128 1","pages":"213-226"},"PeriodicalIF":0.0,"publicationDate":"2012-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1143/PTP.128.213","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64013501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Response of Uniformly Accelerated Particle Detectors in the Presence of Co-Accelerated Mirrors 共加速镜存在下均匀加速粒子探测器的响应
Progress of Theoretical Physics Pub Date : 2012-03-01 DOI: 10.1143/PTP.127.433
N. Nicolaevici
{"title":"Response of Uniformly Accelerated Particle Detectors in the Presence of Co-Accelerated Mirrors","authors":"N. Nicolaevici","doi":"10.1143/PTP.127.433","DOIUrl":"https://doi.org/10.1143/PTP.127.433","url":null,"abstract":"We obtain the transition rates for an Unruh-DeWitt particle detector which uniformly accelerates in the presence of a perfectly reflecting spherical mirror that contracts and expands with constant acceleration. We also consider the case when the detector accelerates between two such mirrors, as well as the corresponding reduced configurations in a two dimensional Minkowski space. The mirror and detector accelerations are chosen such that the transition rates are independent of time. In all cases we find that the response respects the detailed balance condition for the Unruh-Davies temperature associated to the detector’s acceleration. An interesting fact is that for the detector between the mirrors the transition spectrum in two dimensions is discrete, while in four dimensions it is continuous.","PeriodicalId":49658,"journal":{"name":"Progress of Theoretical Physics","volume":"127 1","pages":"433-452"},"PeriodicalIF":0.0,"publicationDate":"2012-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1143/PTP.127.433","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64010466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Non-Equilibrium Critical Relaxation of the 3D Heisenberg Magnets with Long-Range Correlated Disorder 具有长程相关无序的三维海森堡磁体的非平衡临界弛豫
Progress of Theoretical Physics Pub Date : 2012-03-01 DOI: 10.1143/PTP.127.369
P. Prudnikov, M. Medvedeva
{"title":"Non-Equilibrium Critical Relaxation of the 3D Heisenberg Magnets with Long-Range Correlated Disorder","authors":"P. Prudnikov, M. Medvedeva","doi":"10.1143/PTP.127.369","DOIUrl":"https://doi.org/10.1143/PTP.127.369","url":null,"abstract":"Monte Carlo simulations of the short-time dynamic behavior are reported for three-dimensional Heisenberg model with long-range correlated disorder at criticality, in the case corresponding to linear defects. The static and dynamic critical exponents are determined for systems starting from an ordered initial state. The obtained values of the exponents are in a good agreement with results of the field-theoretic description of the critical behavior of this model in the two-loop approximation.","PeriodicalId":49658,"journal":{"name":"Progress of Theoretical Physics","volume":"127 1","pages":"369-382"},"PeriodicalIF":0.0,"publicationDate":"2012-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1143/PTP.127.369","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64010275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 16
Radiation magnetohydrodynamics for black hole-torus system in full general relativity: A step toward physical simulation 完全广义相对论下黑洞环面系统的辐射磁流体动力学:迈向物理模拟的一步
Progress of Theoretical Physics Pub Date : 2012-03-01 DOI: 10.1143/PTP.127.535
M. Shibata, Y. Sekiguchi
{"title":"Radiation magnetohydrodynamics for black hole-torus system in full general relativity: A step toward physical simulation","authors":"M. Shibata, Y. Sekiguchi","doi":"10.1143/PTP.127.535","DOIUrl":"https://doi.org/10.1143/PTP.127.535","url":null,"abstract":"A radiation-magnetohydrodynamic simulation for the black hole-torus system is per- formed in the framework of full general relativity for the first time. A truncated moment formalism is employed for a general relativistic neutrino radiation transport. Several systems in which the black hole mass is MBH =3o r 6M� , the black hole spin is zero, and the torus mass is ≈ 0.14-0.38Mare evolved as models of the remnant formed after the merger of binary neutron stars or black hole-neutron star binaries. The equation of state and micro- physics for the high-density and high-temperature matter are phenomenologically taken into account in a semi-quantitative manner. It is found that the temperature in the inner region of the torus reaches > 10 MeV which enhances a high luminosity of neutrinos ∼ 10 51 ergs/s for MBH =6 Mand ∼ 10 52 ergs/s for MBH =3 M� . It is shown that neutrinos are likely to be emitted primarily toward the outward direction in the vicinity of the rotational axis and their energy density may be high enough to launch a low-energy short gamma-ray burst via the neutrino-antineutrino pair-annihilation process with the total energy deposition ∼ 10 47 - 10 49 ergs. It is also shown in our model that for MBH =3 M� , the neutrino luminosity is larger than the electromagnetic luminosity while for MBH =6 M� , the neutrino luminosity is comparable to or slightly smaller than the electromagnetic luminosity. Subject Index: 420, 425","PeriodicalId":49658,"journal":{"name":"Progress of Theoretical Physics","volume":"127 1","pages":"535-559"},"PeriodicalIF":0.0,"publicationDate":"2012-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1143/PTP.127.535","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64010087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 27
The Complex Energy Method Applied to the Nd Scattering with a Model Three-Body Force 复能量法在模型三体力Nd散射中的应用
Progress of Theoretical Physics Pub Date : 2012-02-17 DOI: 10.1143/PTP.127.1033
Aye Mya Phyu, H. Kamada, J. Golak, H. H. Oo, H. Witała, W. Gloeckle
{"title":"The Complex Energy Method Applied to the Nd Scattering with a Model Three-Body Force","authors":"Aye Mya Phyu, H. Kamada, J. Golak, H. H. Oo, H. Witała, W. Gloeckle","doi":"10.1143/PTP.127.1033","DOIUrl":"https://doi.org/10.1143/PTP.127.1033","url":null,"abstract":"Using the complex energy method, the problem of nucleon-deuteron scattering is solved with a simple three-body force having a separable form. Our results are compared with the results of modern direct two-variable calculations and a good agreement is found. This forms a firm base for other applications of the complex energy method.","PeriodicalId":49658,"journal":{"name":"Progress of Theoretical Physics","volume":"127 1","pages":"1033-1039"},"PeriodicalIF":0.0,"publicationDate":"2012-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1143/PTP.127.1033","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64008796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Suppressing Proton Decay by Cancellation in S4 Flavor Symmetric Extra U(1) Model 通过抵消抑制S4风味对称额外U(1)模型中的质子衰变
Progress of Theoretical Physics Pub Date : 2012-02-16 DOI: 10.1143/PTP.128.1229
Y. Daikoku, H. Okada
{"title":"Suppressing Proton Decay by Cancellation in S4 Flavor Symmetric Extra U(1) Model","authors":"Y. Daikoku, H. Okada","doi":"10.1143/PTP.128.1229","DOIUrl":"https://doi.org/10.1143/PTP.128.1229","url":null,"abstract":"We consider proton stability based on E_6 inspired extra U(1) model with S_4 flavor symmetry. In this model, a long life time of proton is realized by the flavor symmetry. One of the interesting effects of flavor symmetry is that the proton decay widths of p -> mu^+, X are suppressed by cancellation. This suppression mechanism is important in the case that Yukawa coupling constants are hierarchical. Our model predicts p -> e^+, K^0 has larger decay width than that of p -> mu^+, K^0.","PeriodicalId":49658,"journal":{"name":"Progress of Theoretical Physics","volume":"128 1","pages":"1229-1250"},"PeriodicalIF":0.0,"publicationDate":"2012-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1143/PTP.128.1229","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64011665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
On the Regularization of Kerr-NUT Spacetime. I 关于Kerr-NUT时空的正则化。我
Progress of Theoretical Physics Pub Date : 2012-02-08 DOI: 10.1143/PTP.127.561
G. Nashed
{"title":"On the Regularization of Kerr-NUT Spacetime. I","authors":"G. Nashed","doi":"10.1143/PTP.127.561","DOIUrl":"https://doi.org/10.1143/PTP.127.561","url":null,"abstract":"Within the framework of teleparallel equivalent of general relativity (TEGR) theory, calculation of the total energy and momentum of Kerr-NUT spacetimes have been employed using two methods of the gravitational energy-momentum, which is coordinate independent, and the Riemannian connection 1-form, e Γ β α . It has been shown that the two methods give the same unacceptable result, i.e., divergent value. Therefore, a local Lorentz transformation that plays a role of a regularizing tool, which subtracts the inertial effects without distorting the true gravitational contribution, has been suggested. This transformation keeps the resulting spacetime to be a solution of the equations of motion of TEGR. Subject Index: 451, 453","PeriodicalId":49658,"journal":{"name":"Progress of Theoretical Physics","volume":"127 1","pages":"561-576"},"PeriodicalIF":0.0,"publicationDate":"2012-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1143/PTP.127.561","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64010129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
SO/Sp Chern-Simons Gauge Theories at Large N, SO/Sp Penner Models and the Gauge Group Volumes SO/Sp chen - simons在大N的规范理论，SO/Sp Penner模型和规范群体积
Progress of Theoretical Physics Pub Date : 2012-02-01 DOI: 10.1143/PTP.127.179
N. Chair, M. Dalabeeh
{"title":"SO/Sp Chern-Simons Gauge Theories at Large N, SO/Sp Penner Models and the Gauge Group Volumes","authors":"N. Chair, M. Dalabeeh","doi":"10.1143/PTP.127.179","DOIUrl":"https://doi.org/10.1143/PTP.127.179","url":null,"abstract":"We construct a deformed SO/Sp Penner generating function responsible for the close connection between SO/Sp Chern-Simons gauge theories at large N and the SO/Sp Penner models. This construction is then shown to follow from a sector of a Chern-Simons gauge theory with coupling constant λ. The free energy and its continuum limit of the perturbative Chern-Simons gauge theory are obtained from the Penner model. Finally, asymptotic expansions for the logarithm of the gauge group volumes are given for every genus g ≥ 0a nd shown to be equivalent to the continuum limits of the SO/Sp Chern-Simons gauge theories and the SO/Sp Penner models. Subject Index: 013, 103, 105, 127, 183","PeriodicalId":49658,"journal":{"name":"Progress of Theoretical Physics","volume":"127 1","pages":"179-198"},"PeriodicalIF":0.0,"publicationDate":"2012-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1143/PTP.127.179","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64009380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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