Quantum Critical Elasticity

Elasticity of a quantum monolayer solid.

Anomalous critical fields in quantum critical superconductors

Fluctuations around an antiferromagnetic quantum critical point (QCP) are believed to lead to unconventional superconductivity and in some cases to high-temperature superconductivity. However, the exact mechanism by which this occurs remains poorly understood. The iron-pnictide superconductor BaFe2(As(1-x)P(x))2 is perhaps the clearest example to date of a high-temperature quantum critical supe...

Fractionalized Quantum Critical Points

Groundstates of certain materials can support exotic excitations with a charge that’s a fraction of the fundamental electron charge. The condensation of these fractionalized particles has been predicted to drive novel quantum phase transitions, which haven’t yet been observed in realistic systems. Through numerical and theoretical analysis of a physical model of interacting lattice bosons, we e...

Deconfined quantum critical points.

The theory of second-order phase transitions is one of the foundations of modern statistical mechanics and condensed-matter theory. A central concept is the observable order parameter, whose nonzero average value characterizes one or more phases. At large distances and long times, fluctuations of the order parameter(s) are described by a continuum field theory, and these dominate the physics ne...

Quantum Critical Higgs

Brando Bellazzini, Csaba Csáki, Jay Hubisz, Seung J. Lee, Javi Serra, and John Terning Institut de Physique Théorique, Université Paris Saclay, CEA, CNRS, F-91191 Gif-sur-Yvette, France Dipartimento di Fisica e Astronomia, Universitá di Padova, Via Marzolo 8, I-35131 Padova, Italy Department of Physics, LEPP, Cornell University, Ithaca, New York 14853, USA Department of Physics, Syracuse Univer...