Abstract. We give a surface integral derivation of the leading-order evolution equations for the spin and energy of a relativistic body interacting with other bodies in the post-Newtonian expansion scheme. The bodies can be arbitrarily shaped and can be strongly self-gravitating. The effects of all mass and current multipoles are taken into account. As part of the computation one of the 2PN pot...

The High Mass X–ray Binary Pulsar SAX J2103.5+4545 has been observed with INTEGRAL several times during the last outburst in 2002–2004. We report a comprehensive study of all INTEGRAL observations, allowing a study of the pulse period evolution during the recent outburst. We measured a very rapid spin-up episode, lasting ∼130 days, which decreased the pulse period by ∼1.8 s. The spin-up rate, Ṗ...

Let B and F = 1 2 Fμνdx μ ∧ dx be two forms, Fμν being the field strength of an abelian connection A. The topological BF system is given by the integral of B∧F . With ”kinetic energy” terms added for B and A, it generates a mass for A thereby suggesting an alternative to the Higgs mechanism, and also gives the London equations. The BF action, being the large length and time scale limit of this ...

The transition amplitude is obtained for free massive particle of arbitrary spin by calculating the path integral in the index–spinor formulation within BFV–BRST approach. None renormalizations of the path integral measure were applied. The calculation has given the Weinberg propagator written in index–free form with the use of index spinor. The choice of boundary conditions on the index spinor...

The most common spin foam models of gravity are widely believed to be discrete path integral quantizations of the Plebanski action. However, their derivation in present formulations is incomplete and lower dimensional simplex amplitudes are left open to choice. Since the large-spin behavior of these amplitudes determines the convergence properties of the state-sum, this gap has to be closed bef...

We study a class of integrable alternating (S1, S2) quantum spin chains with critical ground state properties. Our main results are [email protected] [email protected] [email protected] 1 the derivation of a finite set of non-linear integral equations for the thermodynamical properties of the systems and the identification of the thermal currents as conserved cu...

A spin-isospin dependent Three-Dimensional formalism based on the momentum vectors for the four-nucleon bound state is presented. The four-nucleon Yakubovsky equations with twoand three-nucleon interactions are formulated as a function of the vector Jacobi momenta. Our formalism, according to the number of spin-isospin states that one takes into account, leads to only a strictly finite number o...

The contribution of incoherent single pion photoproduction to the spin response of the deuteron, i.e., the asymmetry of the total photoabsorption cross section with respect to parallel and antiparallel spins of photon and deuteron, is calculated over the region of the ∆-resonance with inclusion of final state NNand πN-rescattering. Sizeable effects, mainly from NN-rescattering, are found leadin...

The transition amplitude is obtained for free massive particle of arbitrary spin by calculating the path integral in the index–spinor formulation within BFV–BRST approach. None renormalizations of the path integral measure were applied. The calculation has given the Weinberg propagator written in index–free form with the use of index spinor. The choice of boundary conditions on the index spinor...