253 citations · 2k across the 74 of their papers we have counts for
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gr-qc2010
Diamond-Shaped Regions as Microcosmoi
Pedro Lauridsen Ribeiro
We give a geometrically intrinsic construction of a global time function for relatively compact diamond-shaped regions in arbitrary spacetimes. In the case of Minkowski spacetime,…
cond-mat.stat-mech2010★ 4 cited
Density of states and quantum phase transition in the thermodynamic limit of the Mermin central-spin model
Savannah Sterling Garmon, Pedro Ribeiro, Rémy Mosseri
We apply a spin-coherent states formalism to study the central-spin model with monochromatic bath and symmetric coupling (the Mermin model); in particular, we derive analytic expre…
cond-mat.str-el2010★ 2 cited
U(1) slave-particle study of the finite-temperature doped Hubbard model in one and two dimensions
P. Ribeiro, P. D. Sacramento, M. A. N. Araujo
One-dimensional systems have unusual properties such as fractionalization of degrees of freedom. Possible extensions to higher dimensional systems have been considered in the liter…