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26 papers · 1 filter
Light Quenched Hadron Spectrum and Decay Constants on different Lattices
C. R. Allton, V. Gimenez, L. Giusti +1
In this paper we study O(2000) (quenched) lattice configurations from the APE collaboration, for different lattice volumes and for 6.0 \le beta \le 6.4 using both the Wilson and th…
Internal energy and condensate fraction of a trapped interacting Bose gas
A. Minguzzi, S. Conti, M. P. Tosi
We present a semiclassical two-fluid model for an interacting Bose gas confined in an anisotropic harmonic trap and solve it in the experimentally relevant region for a spin-polari…
Three-manifold invariants and their relation with the fundamental group
E. Guadagnini, L. Pilo
We consider the 3-manifold invariant I(M) which is defined by means of the Chern-Simons quantum field theory and which coincides with the Reshetikhin-Turaev invariant. We present s…
Geometric dynamical observables in rare gas crystals
Lapo Casetti, Alessandro Macchi
We present a detailed description of how a differential geometric approach to Hamiltonian dynamics can be used for determining the existence of a crossover between different dynami…
Comparing Different Improvement Programs for the N-Vector Model
Sergio Caracciolo, Andrea Pelissetto
We discuss the connection between various types of improved actions in the context of the two-dimensional sigma-model. We also discuss spectrum-improved actions showing that these…
Electron Correlation and Charge Transfer Instability in Bilayered Two Dimensional Electron Gas
Sergio Conti, Gaetano Senatore
We prove that the predicted charge transfer state in symmetric bilayers of two dimensional electron gases is always unstable at zero bias voltage, due to interlayer correlation and…