8. Quantum field theory on the lattice
... – 4-coordinate x is discrete (x ∈ aZ 4 , a lattice spacing), the integral in (1) has finite dimensionality and can, in principle, be evaluated by brute force ( = computers) 7→ gives fully non-perturbative results. • Need to extrapolate: V → ∞, a → 0 in order to recover continuum physics. ...
... – 4-coordinate x is discrete (x ∈ aZ 4 , a lattice spacing), the integral in (1) has finite dimensionality and can, in principle, be evaluated by brute force ( = computers) 7→ gives fully non-perturbative results. • Need to extrapolate: V → ∞, a → 0 in order to recover continuum physics. ...
Statistical physics
... these system it is impossible and even does not make sense to study the full microscopic dynamics. The only relevant information is, say, how many atoms have a particular energy, then one can calculate the observable thermodynamic values. That is, one has to know the distribution function of the par ...
... these system it is impossible and even does not make sense to study the full microscopic dynamics. The only relevant information is, say, how many atoms have a particular energy, then one can calculate the observable thermodynamic values. That is, one has to know the distribution function of the par ...
Angular Momentum in Quantum Mechanics
... Like other observable quantities, angular momentum is described in QM by an operator. This is in fact a vector operator, similar to momentum operator. However, as we will shortly see, contrary to the linear momentum operator, the three components of the angular momentum operator do not commute. In Q ...
... Like other observable quantities, angular momentum is described in QM by an operator. This is in fact a vector operator, similar to momentum operator. However, as we will shortly see, contrary to the linear momentum operator, the three components of the angular momentum operator do not commute. In Q ...
Quantum steady states and phase transitions in the presence of non
... requiring a vanishing response of to any variation of fV (t). We show that this approach is equivalent to Dirac-Frenkel (using a variational Hamiltonian instead that a variational wavefunction) We successfully use it to compute the non linear I-V characteristic of a resistively shunted Josephson Jun ...
... requiring a vanishing response of to any variation of fV (t). We show that this approach is equivalent to Dirac-Frenkel (using a variational Hamiltonian instead that a variational wavefunction) We successfully use it to compute the non linear I-V characteristic of a resistively shunted Josephson Jun ...
