output
19922026
researchers with a paper here
collaborating institutions
Showing 1999Show all

25 papers · 1 filter

gr-qc1999★ 1 cited

Nondimensional Simplification of Tensor Polynomials with Indices

X. Jaen, A. Balfagon

We are presenting an algorithm capable of simplifying tensor polynomials with indices when the building tensors have index symmetry properties. These properties include simple symm…

gr-qc1999★ 19 cited

Review of some classical gravitational superenergy tensors using computational techniques

X. Jaen, A. Balfagon

We use computational algorithms recently developed by us to study completely four index divergence free quadratic in Riemann tensor polynomials in GR. Some results are new and some…

cond-mat.stat-mech1999★ 72 cited

Quasi one dimensional He inside carbon nanotubes

M. C. Gordillo, J. Boronat, J. Casulleras

We report results of diffusion Monte Carlo calculations for both He absorbed in a narrow single walled carbon nanotube (R = 3.42 Å) and strictly one dimensional He. Inside…

astro-ph1999★ 90 cited

Gamma-ray emission from novae related to positron annihilation: constraints on its observability posed by new experimental nuclear data

M. Hernanz, J. Jose, A. Coc +2

Classical novae emit gamma-ray radiation at 511 keV and below, with a cut-off at around (20-30) keV, related to positron annihilation and its Comptonization in the expanding envelo…

math.AG1999

Lower bounds of the slope of fibred threefolds

Miguel A. Barja

We study from a geographical point of view fibrations of threefolds over smooth curves, such that the general fibre is of general type. We prove the non-negativity of certain relat…

cond-mat.stat-mech1999★ 111 cited

Progress in Monte Carlo calculations of Fermi systems: normal liquid 3He

Joaquim Casulleras, Jordi Boronat

The application of the diffusion Monte Carlo method to a strongly interacting Fermi system as normal liquid He is explored. We show that the fixed-node method together with the…