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The Institute of Physics ( IOP ) по журналам "Classical and Quantum Gravity"

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  • P S Green; T Hubsch (1989-03-01)
    The authors study the triple products of (1,1)-forms for Calabi-Yau manifolds, and derive them in closed form for those that are constructed as smooth hypersurfaces in products of semi-ample complex surfaces, or are complete ...
  • Ted Jacobson (1996-08-01)
    The rank-1 sector of classical Ashtekar gravity is considered, motivated by the degeneracy of the metric along the Wilson lines in quantum loop states. It is found that the lines behave like (1 + 1)-dimensional spacetimes ...
  • W Siegel (1986-03-01)
    The author shows that the previously proposed form of supergravity with 32 off-shell components (instead of the usual 24 for minimal or 40 for non-minimal) is reducible, and represents only a particular coupling of ...
  • E Gourgoulhon (1992-12-01)
    A complete system of equations sufficient to handle the fully general relativistic hydrodynamics in the case of spherical symmetry is presented, as well as its numerical implementation in a pseudo-spectral code. This code ...
  • R Coquereaux; G Esposito-Farese (1990-09-01)
    The Lagrangian describing the interactions of gravity, electromagnetism and the Jordan-Thiry-Kaluza-Klein scalar field is quantised by using the background field method. The authors compute all the divergences appearing ...
  • Giampiero Esposito; Alexander Yu Kamenshchik; Giuseppe Pollifrone (1996-05-01)
    This paper applies -function regularization to evaluate the 1-loop effective action for scalar field theories and Euclidean Maxwell theory in the presence of boundaries. After a comparison of two techniques developed in ...
  • A G Mirzabekian; G A Vilkovisky (1995-09-01)
    We present the solution of the problem of asymptotic terms discovered in the 1-loop form factors of the gravitational effective action. Owing to certain constraints among their coefficients, which we establish, these terms ...
  • A O Barvinsky; A Y Kamenshchik; I P Karmazin; I V Mishakov (1992-02-01)
    The authors develop a calculational technique for zeta -functions of differential operators on manifolds with boundaries with explicitly unknown spectra and apply it for the computation of the 1-loop contributions of matter ...
  • A O Barvinsky; A Y Kamenshchik (1990-08-01)
    The Hartle-Hawking wavefunction of the Universe is computed in the 1-loop approximation and the general algorithm for the probability of inflation is obtained. Its normalisability is shown to be determined by the anomalous ...
  • Eric Bergshoeff; Ergin Sezgin; Antoine Van Proeyen (1999-10-01)
    We construct the supercurrent multiplet that contains the energy-momentum tensor of the (2,0) tensor multiplet. By coupling this multiplet of currents to the fields of conformal supergravity, we first construct the linearized ...
  • Riccardo Argurio (1996-11-01)
    We find black hole solutions to Euclidean 2 + 1 gravity coupled to a relativistic particle which have a dynamical conical singularity at the horizon. These solutions mimic the tree level contribution to the partition ...
  • Henri Waelbroeck; José A Zapata (1996-07-01)
    We show that 't Hooft's representation of (2 + 1)-dimensional gravity in terms of flat polygonal tiles is closely related to a gauge-fixed version of the covariant Hamiltonian lattice theory. 't Hooft's gauge is remarkable ...
  • Jorma Louko; Hans-Jrgen Matschull (2000-04-21)
    We formulate and analyse the Hamiltonian dynamics of a pair of massive spinless point particles in (2 + 1)-dimensional Einstein gravity by anchoring the system to a conical infinity, isometric to the infinity generated by ...
  • A Hosoya; K Nakao (1990-02-01)
    The (2+1)-dimensional pure Einstein gravity is studied in the ADM formalism. The authors solve the initial value and the time evolution problems with a closed Riemann surface being an initial surface, choosing the time ...
  • Chol-Bu Kim; T Shimizu; K Yoshida (1992-05-01)
    The (2+1)-dimensional quantum gravity coupled with a spinor field is considered in the connection representation. The canonical structure of the theory is discussed and gauge invariant phase space variables are identified. ...
  • M Ciafaloni; P Valtancoli (1997-04-01)
    We derive, in 2 + 1 dimensions, classical solutions for the metric and the motion of two or more spinning particles, in the conformal Coulomb gauge introduced previously. The solutions are exact in the N-body static case, ...
  • V Husain (1992-03-01)
    A three-dimensional generally covariant theory is described that has a 2+1 canonical decomposition in which the Hamiltonian constraint, which generates the dynamics, is absent. Physical observables for the theory are ...
  • H Waelbroeck (1990-05-01)
    This is a theory of 2+1 gravity with a spacelike lattice and continuous time. It is derived from the Chern-Simons formulation of 2+1 gravity, in which the frame vectors are canonically conjugate to the SO(2, 1) connection. ...
  • A Ashtekar; V Husain; C Rovelli; J Samuel; L Smolin (1989-10-01)
    2+1 Einstein gravity is used as a toy model for testing a program for nonperturbative canonical quantisation of the 3+1 theory. The program can be successfully implemented in the model and leads to a surprisingly rich ...
  • J E Nelson; T Regge (1992-12-01)
    The authors review some recent results obtained which concern quantum gravity in 2+1 (2 space, 1 time) dimensions. In 2+1 dimensions the Einstein-Hilbert first order action with cosmological constant can be written as a ...