Dynamics near quantum criticality in two space dimensions [electronic resource] / Snir Gazit.

Unlimited

Authorized users

Can lend chapters, not whole ebooks

Dynamics near quantum criticality in two space dimensions [electronic resource] / Snir Gazit.

9783319193540 electronic book
3319193546 electronic book
9783319193533

Cham : Springer, 2015.

English

1 online resource (xv, 71 pages) : illustrations.

QC173.4.C74

530.4/74

This work addresses dynamical aspects of quantum criticality in two space dimensions. It probes two energy scales: the amplitude (Higgs) mode, which describes fluctuations of the order parameter amplitude in the broken symmetry phase, and the dual vortex superfluid stiffness. The results demonstrate that the amplitude mode can be probed arbitrarily close to criticality in the universal lineshape of the scalar susceptibility and the optical conductivity. The hallmark of quantum criticality is the emergence of softening energy scales near the phase transition. In addition, the author employs the charge-vortex duality to show that the capacitance of the Mott insulator near the superfluid to insulator phase transition serves as a probe for the dual vortex superfluid stiffness. The numerical methods employed are described in detail, in particular a worm algorithm for O(N) relativistic models and methods for numerical analytic continuation of quantum Monte Carlo data. The predictions obtained are particularly relevant to recent experiments in cold atomic systems and disordered superconductors. .

"Doctoral thesis accepted by the Technion -- Israel Institute of Technology, Haifa, Israel."

Includes bibliographical references.

Access limited to authorized users.

Online resource; title from PDF title page (SpringerLink, viewed June 19, 2015).

Springer theses.

Online Resources > Ebooks
All Resources