Классическая книга по теории относительности, написанная известным физиком-
теоретиком. Содержит не только прекрасное изложение специальной и общей теории …

The model investigated recently by Tóth, a lattice gas of bosons with hard-core repulsion on
a complete graph, is studied here by diagonalizing the Hamiltonian. The thermodynamic …

It is shown that the Witten spinor, ie a solution to the Witten equation on a maximal spacelike
hypersurface S of a four-dimensional spacetime M, is completely equivalent to a set of three …

Abstract On February 4, 1917 Albert Einstein writes to Paul Ehrenfest (Kerszberg 1989,
p155):“I have... again perpetrated something about gravitation theory which somewhat …

Evidence for the existence of gravitational waves is briefly reviewed, and techniques for
generating and receiving gravitational waves are considered. It is concluded that the …

It is shown that Palatini variation of a class of gravitational actions based on a quadratic
generalization of the Einstein-Hilbert action results in a metric-incompatible theory of gravity …

In the framework of a general Lagrangian approach to the equations of motion for test
particles with internal structure symmetry conditions and the corresponding conserved …

The variational structure of General Relativity is revisited. After discussing conditions which
ensure that second-order Lagrangians linear in the second-order derivatives generate …

Field equations for n-frames h μ a that are possible in the theory of absolute parallelism are
considered. It is shown that in three cases the equations can, after the substitution h μ a= H p …

The detection of gravitational waves is, nowadays, technologically possible. The Virgo
project, proposed by a French-Italian collaboration, is now on the verge of being fully …