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The quantum N-body problem with a minimal length
The quantum N-body problem minimal length
2010/12/23
The quantum $N$-body problem is studied in the context of nonrelativistic quantum mechanics with a one-dimensional deformed Heisenberg algebra of the form $[\hat x,\hat p]=i(1+\beta \hat p^2)$, leadin...
On the measure problem in slow roll inflation and loop quantum cosmology
slow roll inflation loop quantum cosmology
2010/12/27
We consider the measure problem in standard slow-roll inflationary models from the perspective of loop quantum cosmology (LQC). Following recent results by Ashtekar and Sloan, we study the probabilit...
The measure problem of cosmology is how to assign normalized probabilities to observations in a universe so large that it may have many observations occurring at many different spacetime locations. I...
Unquenching the Landau Gauge Lattice Propagators and the Gribov Problem
Landau Gauge Lattice Propagators Gribov Problem
2011/1/13
The gluon and ghost propagators are computed using both quenched and dynamical configurations
for the same lattice spacings. The Wilson fermions are simulated at several quark masses.
Furthermore, t...
Riemann-Hilbert Problem and Quantum Field Theory: Integrable Renormalization, Dyson-Schwinger Equations
Riemann-Hilbert Problem Quantum Field Theory
2010/11/19
In the first purpose, we concentrate on the theory of quantum integrable systems underlying the Connes-Kreimer approach. We introduce a new family of Hamiltonian systems depended on the perturbative ...
An effective approach to the problem of time: general features and examples
effective time general features examples
2010/12/20
The effective approach to quantum dynamics allows a reformulation of the Dirac quantization
procedure for constrained systems in terms of an infinite-dimensional constrained system of classical type....