# Unconventional critical exponents at dynamical quantum phase transitions in a random Ising chain

@article{Trapin2021UnconventionalCE, title={Unconventional critical exponents at dynamical quantum phase transitions in a random Ising chain}, author={Daniele Trapin and Jad C. Halimeh and Markus Heyl}, journal={Physical Review B}, year={2021} }

Dynamical quantum phase transitions (DQPTs) feature singular temporal behavior in transient quantum states during nonequilibrium real-time evolution. In this work we show that DQPTs in random Ising chains exhibit critical behavior with nontrivial exponents that are not integer valued and not of mean-field type. By means of an exact renormalization group transformation we estimate the exponents with high accuracy eliminating largely any finite-size effects. We further discuss how the considered…

## 3 Citations

### Late-time critical behavior of local string-like observables under quantum quenches

- Physics
- 2022

In recent times it has been observed that signatures of equilibrium quantum criticality surprisingly show up in many-body systems which are manifestly far from equilibrium. We explore such scenarios…

### Dynamical quantum phase transitions in spin-$S$ $\mathrm{U}(1)$ quantum link models

- Physics
- 2022

Dynamical quantum phase transitions (DQPTs) are a powerful concept of probing far-from-equilibrium criticality in quantum many-body systems. With the strong ongoing experimental drive to…

### Entanglement View of Dynamical Quantum Phase Transitions.

- PhysicsPhysical review letters
- 2021

First steps toward a classification of DQPTs are provided by using a matrix product state description of unitary dynamics in the thermodynamic limit and distinguishing the two limiting cases of "precession" and "entanglement" D QPTs.

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