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6 papers · 1 filter
Schrodinger-Newton equation with complex Newton constant and induced gravity
Lajos Diósi, Tibor Norbert Papp
In the reversible Schrodinger-Newton equation a complex Newton coupling G*exp(-i*alpha) is proposed in place of G. The equation becomes irreversible and all initial one-body states…
The puzzle of apparent linear lattice artifacts in the 2d non-linear sigma-model and Symanzik's solution
Janos Balog, Ferenc Niedermayer, Peter Weisz
Lattice artifacts in the 2d O(n) non-linear sigma-model are expected to be of the form O(a^2), and hence it was (when first observed) disturbing that some quantities in the O(3) mo…
Does wave function collapse cause gravity?
Lajos Diósi
We give a twist to the assumption - discussed in various earlier works - that gravity plays a role in the collapse of the wave function. This time we discuss the contrary assumptio…
Logarithmic corrections to O(a^2) lattice artifacts
Janos Balog, Ferenc Niedermayer, Peter Weisz
We compute logarithmic corrections to the O(a^2) lattice artifacts for a class of lattice actions for the non-linear O(n) sigma-model in two dimensions. The generic leading artifac…
Pion Mass Shift and the Kinetic Freeze Out Process
Sven Zschocke, Laszlo P. Csernai
The kinetic Freeze Out process of a pion gas through a finite layer with time-like normal is considered. The pion gas is described by a Boltzmann gas with elastic collisions among…
On the duality between the hyperbolic Sutherland and the rational Ruijsenaars-Schneider models
L. Feher, C. Klimcik
We consider two families of commuting Hamiltonians on the cotangent bundle of the group GL(n,C), and show that upon an appropriate single symplectic reduction they descend to the s…