activity
20062020
most citedOn the energy of homogeneous cosmologies

43 citations · 78 across the 16 of their papers we have counts for

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15 papers · 1 filter

gr-qc2020

General relativistic tidal heating for the Mller 58 pseudotensor

Lau Loi So

In his study of tidal stabilization of fully relativistic neutron stars Thorne showed that the fully relativistic expression for tidal heating is the same as in non-relativistic Ne…

gr-qc2018

The modification of the Bel-Robinson energy-momentum

Lau Loi So

For describing the non-negative gravitational energy-momentum in terms of a pure Bel-Robinson `momentum' in a quasi-local small sphere limit, the Bel-Robinson tensor is desirab…

gr-qc2017

General relativistic tidal heating for the Moller pseudotensor

Lau Loi So

In his study of tidal stabilization of fully relativistic neutron stars Thorne showed that the fully relativistic expression for tidal heating is the same as in non-relativistic Ne…

gr-qc2015

Relativistic tidal heating of Hamiltonian quasi-local boundary expressions

Lau Loi So

Purdue and Favata calculate the tidal heating used certain classical pseudotensors. Booth and Creighton employed the quasi-local mass formalism of Brown and York to demonstrate the…

gr-qc2015★ 1 cited

General relativistic tidal work for Papapetrou, Weinberg and Goldberg pseudotensors

Lau Loi So

In 1998 Thorne claimed that all pseudotensors give the same tidal work as the Newtonian theory. In 1999, Purdue used the Landau-Lifshitz pseudotensor to calculate the tidal heating…

gr-qc2009★ 1 cited

An alternative non-negative gravitational energy tensor to the Bel-Robinson tensor

Lau Loi So

The Bel-Robinson tensor gives a positive definite gravitational energy in the small sphere limit approximation. However, there is an alternative tensor which…

gr-qc2009★ 12 cited

Energy-momentum density in small regions: the classical pseudotensors

Lau Loi So, James M. Nester, Hsin Chen

The values for the gravitational energy-momentum density, given by the famous classical pseudotensors: Einstein, Papapetrou, Landau-Lifshitz, Bergmann-Thompson, Goldberg, Møller, a…

gr-qc2008★ 1 cited

Gravitational energy in small regions for the quasilocal expressions in orthonormal frames

Lau Loi So

The Mller tetrad gravitational energy-momentum expression was recently evaluated for a small vacuum region using orthonormal frames adapted to Riemann normal coordinates. Howeve…

gr-qc2008★ 2 cited

Gravitational energy in a small region for the modified Einstein and Landau-Lifshitz pseudotensors

Lau Loi So

The purpose of the classical Einstein and Landau-Lifshitz pseudotensors is for determining the gravitational energy. Neither of them can guarantee a positive energy in holonomic fr…

gr-qc2008★ 3 cited

Gravitational energy from a combination of a tetrad expression and Einstein's pseudotensor

Lau Loi So

The energy-momentum for a gravitating system can be considered by the tetard teleparalle gauge current in orthonormal frames. Whereas the Einstein pseudotensor used holonomic frame…

gr-qc2006

The modification of the Einstein and Landau-Lifshitz pseudotensrs

Lau Loi So

Deser et al. proposed a combination of the Einstein and Landau-Lifshitz pseudotensors such that the second derivatives in vacuum are proportional to the Bel-Robinson tensor. Stimul…

gr-qc2006★ 4 cited

On source coupling and the teleparallel equivalent to GR

Lau Loi So, James M. Nester

Alternatives to the usual general relativity (GR) Riemannian framework include Riemann-Cartan and teleparallel geometry. The ``teleparallel equivalent of GR" (TEGR, aka GR…

gr-qc2006★ 3 cited

Gravitational energy-momentum in small regions according to Moller's tetrad expression

Lau Loi So, James M. Nester

Moller's tetrad gravitational energy-momentum "tensor" is evaluated for a small vacuum region using an orthonormal frame adapted to Riemann normal coordinates. We find that it does…

gr-qc2006★ 1 cited

The Energy of Bianchi Type I and II Universes in Teleparallel Gravity

Lau Loi So, T. Vargas

For certain models, the energy of the universe which includes the energy of both the matter and the gravitational fields is obtained by using the quasilocal energy-momentum in tele…

gr-qc2006★ 7 cited

A modification of the Chen-Nester quasilocal expressions

Lau Loi So

Chen and Nester proposed four boundary expressions for the quasilocal quantities using the covariant Hamiltonian formalism. Based on these four expressions, there is a simple gener…