{"title":"Particle Dynamics and Symmetries in De Sitter Space","authors":"Y. Tanikawa","doi":"10.1143/PTPS.E65.609","DOIUrl":"https://doi.org/10.1143/PTPS.E65.609","url":null,"abstract":"","PeriodicalId":20614,"journal":{"name":"Progress of Theoretical Physics Supplement","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1143/PTPS.E65.609","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64919955","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}
{"title":"Quantum Numbers of Particles","authors":"Seitaro Nakamura","doi":"10.1143/PTPS.E65.661","DOIUrl":"https://doi.org/10.1143/PTPS.E65.661","url":null,"abstract":"","PeriodicalId":20614,"journal":{"name":"Progress of Theoretical Physics Supplement","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1143/PTPS.E65.661","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64920139","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}
M. Bandō, K. Morita, Toshihiro Yoshida, Y. Sumi, H. Kanada, T. Matsuoka, Tsuneo Suzuki, Haruo Suzuki, K. Fujimura, Tetsuro Kobayashi, I. Ohba
{"title":"PART II Phenomenological Analyses of High Energy Scattering","authors":"M. Bandō, K. Morita, Toshihiro Yoshida, Y. Sumi, H. Kanada, T. Matsuoka, Tsuneo Suzuki, Haruo Suzuki, K. Fujimura, Tetsuro Kobayashi, I. Ohba","doi":"10.1143/PTPS.E67.374","DOIUrl":"https://doi.org/10.1143/PTPS.E67.374","url":null,"abstract":"","PeriodicalId":20614,"journal":{"name":"Progress of Theoretical Physics Supplement","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1143/PTPS.E67.374","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64920809","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}
{"title":"Preface to Part II : Proceedings of the Japan-USA Collaborative Workshops on the History of Particle Theory in Japan, 1935-1960 (Japan-USA Collaboration July 1984-September 1985)","authors":"L. Brown, R. Kawabe, M. Konuma, Z. Maki","doi":"10.1093/PTPSUPP.105.100","DOIUrl":"https://doi.org/10.1093/PTPSUPP.105.100","url":null,"abstract":"","PeriodicalId":20614,"journal":{"name":"Progress of Theoretical Physics Supplement","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1093/PTPSUPP.105.100","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"61190129","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}
This review deals with the theory of four-fermion interactions in curved spacetime. Starting with the D-dimensional Minkowski spacetime (2 ≤ D ≤ 4) the effective potential in the leading order of 1/N-expansion is calculated and the phase structure of the theory is investigated. Using the same technique the effective potential for composite operator ψψ in four-fermion models is calculated under the following circumstances: a) D-dimensional weakly curved spacetime (in linear curvature approximation), b) D-dimensional de Sitter and anti-de Sitter universe, c) D-dimensional Einstein universe. The phase structure of the theory is investigated analytically as well as numerically. Curvature induced phase transitions are discussed where fermion masses are dynamically generated. As an extension of four-fermion models we consider the gauged Nambu-Jona-Lasinio (NJL) model, higher derivative NJL model and supersymmetric NJL model in weakly curved spacetime where the effective potential is analytically evaluated. The phase structure of the models is again analyzed and the condition for the chiral symmetry breaking in the gauged NJL model is given in an analytical form. Finally the influence of two external effects (non-zero temperature and gravitational field, nontrivial topology and gravitational field as well as magnetic and gravitational field) to the phase structure of four-fermion models is analyzed. The possibility of curvature and temperature-induced or curvatureand topology-induced phase transitions is discussed. It is also argued that the chiral symmetry broken by a weak magnetic field may be restored due to the presence of gravitational field. Some applications of four-fermion models in quantum gravity are also briefly investigated. This paper was published in Prog. Theor. Phys. Suppl. 127 (1997) 93. 1e-mail : inagaki@ipc.hiroshima-u.ac.jp 2e-mail:muta@sci.hiroshima-u.ac.jp 3e-mail:sergei@ecm.ub.es, odintsov@quantum.univalle.edu.co
{"title":"Dynamical Symmetry Breaking in Curved Spacetime","authors":"T. Inagaki, T. Muta, S. Odintsov","doi":"10.1143/ptp.127.93","DOIUrl":"https://doi.org/10.1143/ptp.127.93","url":null,"abstract":"This review deals with the theory of four-fermion interactions in curved spacetime. Starting with the D-dimensional Minkowski spacetime (2 ≤ D ≤ 4) the effective potential in the leading order of 1/N-expansion is calculated and the phase structure of the theory is investigated. Using the same technique the effective potential for composite operator ψψ in four-fermion models is calculated under the following circumstances: a) D-dimensional weakly curved spacetime (in linear curvature approximation), b) D-dimensional de Sitter and anti-de Sitter universe, c) D-dimensional Einstein universe. The phase structure of the theory is investigated analytically as well as numerically. Curvature induced phase transitions are discussed where fermion masses are dynamically generated. As an extension of four-fermion models we consider the gauged Nambu-Jona-Lasinio (NJL) model, higher derivative NJL model and supersymmetric NJL model in weakly curved spacetime where the effective potential is analytically evaluated. The phase structure of the models is again analyzed and the condition for the chiral symmetry breaking in the gauged NJL model is given in an analytical form. Finally the influence of two external effects (non-zero temperature and gravitational field, nontrivial topology and gravitational field as well as magnetic and gravitational field) to the phase structure of four-fermion models is analyzed. The possibility of curvature and temperature-induced or curvatureand topology-induced phase transitions is discussed. It is also argued that the chiral symmetry broken by a weak magnetic field may be restored due to the presence of gravitational field. Some applications of four-fermion models in quantum gravity are also briefly investigated. This paper was published in Prog. Theor. Phys. Suppl. 127 (1997) 93. 1e-mail : inagaki@ipc.hiroshima-u.ac.jp 2e-mail:muta@sci.hiroshima-u.ac.jp 3e-mail:sergei@ecm.ub.es, odintsov@quantum.univalle.edu.co","PeriodicalId":20614,"journal":{"name":"Progress of Theoretical Physics Supplement","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64011526","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}
Pub Date : 2013-05-17DOI: 10.1093/PTPSUPP.37-38.III
N. Fukuda, Y. Miyamoto, T. Miyazima
{"title":"To Sin-itiro Tomonaga on his Sixtieth Birthday","authors":"N. Fukuda, Y. Miyamoto, T. Miyazima","doi":"10.1093/PTPSUPP.37-38.III","DOIUrl":"https://doi.org/10.1093/PTPSUPP.37-38.III","url":null,"abstract":"","PeriodicalId":20614,"journal":{"name":"Progress of Theoretical Physics Supplement","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1093/PTPSUPP.37-38.III","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"61190288","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}
Results are reviewed on the systematic study of :E hypernuclei with (stopped K-, ~r±) reactions performed by Tokyo group. Formation and decay properties of :E hypernuclei obtained from 12C(K-, ~r+) and 4He(K-, ~r±) reactions are summarized. The first observation of the :E hypernuclear bound state (~He) and information of isospin/spin dependence of :E·nucleus interaction from the 4He data are discussed in detail and they are compared with recent theoretical estimations.
{"title":"Formation and Decay of ~ Hypernuclei in (Stopped x-, n±) Reactions","authors":"H. Outa, T. Yamazaki, M. Iwasaki, R. Hayano","doi":"10.1143/PTP.117.177","DOIUrl":"https://doi.org/10.1143/PTP.117.177","url":null,"abstract":"Results are reviewed on the systematic study of :E hypernuclei with (stopped K-, ~r±) reactions performed by Tokyo group. Formation and decay properties of :E hypernuclei obtained from 12C(K-, ~r+) and 4He(K-, ~r±) reactions are summarized. The first observation of the :E hypernuclear bound state (~He) and information of isospin/spin dependence of :E·nucleus interaction from the 4He data are discussed in detail and they are compared with recent theoretical estimations.","PeriodicalId":20614,"journal":{"name":"Progress of Theoretical Physics Supplement","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63976328","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}
{"title":"Preface to Part I: Proceedings of the Japan-US. A Collaborative Workshops on the History of Particle Theory in Japan, 1930–1950","authors":"L. Brown, M. Konuma, Z. Maki","doi":"10.1093/PTPSUPP.105.2","DOIUrl":"https://doi.org/10.1093/PTPSUPP.105.2","url":null,"abstract":"","PeriodicalId":20614,"journal":{"name":"Progress of Theoretical Physics Supplement","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1093/PTPSUPP.105.2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"61190142","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}
{"title":"Density Dependence in - Atoms and Implications for Hypernuclei","authors":"C. Batty, E. Friedman, A. Gal","doi":"10.1143/PTP.117.227","DOIUrl":"https://doi.org/10.1143/PTP.117.227","url":null,"abstract":"","PeriodicalId":20614,"journal":{"name":"Progress of Theoretical Physics Supplement","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63976201","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}
In this paper we study the valence electronic structure of 3d transition metal compounds in an Anderson impurity approximation. Using simplified models we arrive at a classification scheme (in terms of several parameters) for the nature of the band gaps in these materials. Mott-Hubbard insulators, in the simple sense, are special cases in this scheme. Another important class of insulators is characterized by light holes of ligand p character and heavy d-like electrons (charge-transfer semiconductors). Within the same theoretical basis we develop the theory describing the photoemission and inverse photoemission spectra from which one can obtain values for the parameters in the Anderson impurity Hamiltonian. Using an exact two particle Green's function formalism the photoemission of CuCl2 is studied and it is shown that this compound is a charge-transfer semi-conductor. For the more general case an approximate, easy to use method is developed and is applied to the (inverse) photoemission of NiO. It is shown that NiO can be characterized as being intermediate between the Mott-Hubbard and charge-transfer regimes.
{"title":"Photoemission and the Electronic Structure of Transition Metal Compounds","authors":"J. Zaanen, G. Sawatzky","doi":"10.1143/PTPS.101.231","DOIUrl":"https://doi.org/10.1143/PTPS.101.231","url":null,"abstract":"In this paper we study the valence electronic structure of 3d transition metal compounds in an Anderson impurity approximation. Using simplified models we arrive at a classification scheme (in terms of several parameters) for the nature of the band gaps in these materials. Mott-Hubbard insulators, in the simple sense, are special cases in this scheme. Another important class of insulators is characterized by light holes of ligand p character and heavy d-like electrons (charge-transfer semiconductors). Within the same theoretical basis we develop the theory describing the photoemission and inverse photoemission spectra from which one can obtain values for the parameters in the Anderson impurity Hamiltonian. Using an exact two particle Green's function formalism the photoemission of CuCl2 is studied and it is shown that this compound is a charge-transfer semi-conductor. For the more general case an approximate, easy to use method is developed and is applied to the (inverse) photoemission of NiO. It is shown that NiO can be characterized as being intermediate between the Mott-Hubbard and charge-transfer regimes.","PeriodicalId":20614,"journal":{"name":"Progress of Theoretical Physics Supplement","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1143/PTPS.101.231","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64704223","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}
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