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[en] Theory of l-reduction of KP hierarchy is investigated from a view point of conformal field theory. Twisted conformal field theory emerges naturally in the discussion. Possible application of this kind of connection between hierarchy and CFT is suggested
Journal
[en] A dynamical realization of the most general superconformal group in one dimension is discussed in which the group parameter α is linked to the cosmological constant.
Journal
Physics of Particles and Nuclei; ISSN 1063-7796; 
; v. 49(5); p. 865-866
; v. 49(5); p. 865-866
[en] The recent advances are presented concerning rational conformal theories in which the physical parameters are given by a finite number of algebraic equations. (author). 13 refs
Source
Brezin, E. (Ecole Normale Superieure, 75 - Paris (France)); Zinn-Justin, J. (CEA Centre d'Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France). Service de Physique Theorique) (eds.); Les Houches Summer School Proceedings; v. 49; 671 p; ISBN 0 444 88440 8; ; 1990; p. 291-304; North-Holland; Amsterdam (Netherlands); 49. Course of the Les Houches summer school in theoretical physics; Les Houches (France); 28 Jun - 5 Aug 1988
; 1990; p. 291-304; North-Holland; Amsterdam (Netherlands); 49. Course of the Les Houches summer school in theoretical physics; Les Houches (France); 28 Jun - 5 Aug 1988
[en] In this paper the conformal invariance by infinitesimal transformations of first-order Lagrange systems is discussed in detail. The necessary and sufficient conditions of conformal invariance by the action of infinitesimal transformations being Lie symmetry simultaneously are given. Then we get the conserved quantities of conformal invariance by the infinitesimal transformations. Finally an example is given to illustrate the application of the results
Journal
Communications in Theoretical Physics; ISSN 0253-6102; ; v. 50(5); p. 1065-1068
; v. 50(5); p. 1065-1068
[en] An introduction to the basic concepts of string theory is presented and heterotic string theory is briefly described
Source
Tran Thanh Van, J. (ed.); 599 p; ISBN 2-86332-055-6; ; 1988; p. 485-498; Editions Frontieres; Gif-sur-Yvette (France); Moriond Meeting on '88 Electroweak interactions and unified theories; Les Arcs (France); 6-13 Mar 1988
; 1988; p. 485-498; Editions Frontieres; Gif-sur-Yvette (France); Moriond Meeting on '88 Electroweak interactions and unified theories; Les Arcs (France); 6-13 Mar 1988
[en] We show that time-reflection symmetric, asymptotically flat, static vacuum data which admit a non-trivial conformal rescaling which leads again to such data must be axi-symmetric and admit a conformal Killing field. Moreover, it is shown that there exists a 3-parameter family of such data
Journal
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