47 citations · 110 across the 10 of their papers we have counts for
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Kinks in the Hartree approximation
Mischa Salle
The topological defects of the lambda phi^4 theory, kink and antikink, are studied in the Hartree approximation. This allows us to discuss quantum effects on the defects in both st…
The Hartree ensemble approximation revisited: The "symmetric phase"
Mischa Salle, Jan Smit
The Hartree ensemble approximation is studied in the ``symmetric phase'' of 1+1 dimensional lambda phi^4 theory. In comparison with the ``broken phase'' studied previously, it is s…
Staying Thermal with Hartree Ensemble Approximations
M. Salle, J. Smit, J. C. Vink
We study thermal behavior of a recently introduced Hartree ensemble approximation, which allows for non-perturbative inhomogeneous field configurations as well as for approximate t…
Thermalization in a Hartree Ensemble Approximation to Quantum Field dynamics
M. Salle, J. Smit, J. C. Vink
For homogeneous initial conditions, Hartree (gaussian) dynamical approximations are known to have problems with thermalization, because of insufficient scattering. We attempt to im…
Thermalisation of inhomogeneous quantum scalar fields in 1+1D
M. Salle, J. Smit, J. C. Vink
Using an improved version of the Hartree approximation, allowing for ensembles of inhomogeneous configurations, we show in a theory, that initially the system thermalises wi…
Scalar Field Dynamics: Classical, Quantum and in Between
M. Salle, J. Smit, J. C. Vink
Using a Hartree ensemble approximation, we investigate the dynamics of the \f^4 model in 1+1 dimensions. We find that the fields initially thermalize with a Bose-Einstein distribut…
Twin Peaks
M. Salle, J. Smit, J. C. Vink
The on-shell imaginary part of the retarded selfenergy of massive $\vr^4$ theory in 1+1 dimensions is logarithmically infrared divergent. This leads to a zero in the spectral funct…