45 papers
Excited States of U(1) Lattice Gauge Theory from Monte Carlo Hamiltonian
A. Hosseinizadeh, G. Melkonyan, H. Kröger +2
We address an old problem in lattice gauge theory - the computation of the spectrum and wave functions of excited states. Our method is based on the Hamiltonian formulation of latt…
Universality in statistical measures of trajectories in classical billiards: Integrable rectangular versus chaotic Sinai and Bunimovich billiards
J F Laprise, A Hosseinizadeh, H Kroger +1
For classical billiards we suggest that a matrix of action or length of trajectories in conjunction with statistical measures, level spacing distribution and spectral rigidity, can…
Stationary Points of Scalar Fields Coupled to Gravity
H. Kroger, G. Melkonyan, F. Paradis +1
We investigate the dynamics of gravity coupled to a scalar field using a non-canonical form of the kinetic term. It is shown that its singular point represents an attractor for cla…
Quantum Chaos Versus Classical Chaos: Why is Quantum Chaos Weaker?
H. Kroger, J. F. Laprise, G. Melkonyan +1
We discuss the questions: How to compare quantitatively classical chaos with quantum chaos? Which one is stronger? What are the underlying physical reasons?
Model of Low-pass Filtering of Local Field Potentials in Brain Tissue
C. Bédard, H. Kröger, A. Destexhe
Local field potentials (LFPs) are routinely measured experimentally in brain tissue, and exhibit strong low-pass frequency filtering properties, with high frequencies (such as acti…
Comparison of classical chaos with quantum chaos
L. A. Caron, D. Huard, H. Kröger +3
We investigate chaotic behavior in a 2-D Hamiltonian system - oscillators with anharmonic coupling. We compare the classical system with quantum system. Via the quantum action, we…