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Coexistence of excited polarons and metastable delocalized states in photoinduced metals

- Sharareh Sayyad, M. Eckstein
- Physics
- 16 October 2014

We study how polaronic states form as a function of time due to strong electron-phonon coupling, starting from a hot electron distribution which is representative of a photoinduced metallic state… Expand

Slowdown of the Electronic Relaxation Close to the Mott Transition.

- Sharareh Sayyad, M. Eckstein
- PhysicsPhysical review letters
- 12 January 2016

We investigate the time-dependent reformation of the quasiparticle peak in a correlated metal near the Mott transition, after the system is quenched into a hot electron state and equilibrates with an… Expand

Comparative study of nonequilibrium insulator-to-metal transitions in electron-phonon systems

- Sharareh Sayyad, R. Žitko, H. Strand, P. Werner, D. Golež
- PhysicsPhysical Review B
- 3 October 2018

We study equilibrium and nonequilibrium properties of electron-phonon systems described by the Hubbard-Holstein model using dynamical mean-field theory. In equilibrium, we benchmark the results for… Expand

Entanglement spectrum crossings reveal non-Hermitian dynamical topology

- Sharareh Sayyad, Jinlong Yu, A. Grushin, L. M. Sieberer
- PhysicsPhysical Review Research
- 20 November 2020

The development of non-Hermitian topological band theory has led to observations of novel topological phenomena in effectively classical, driven and dissipative systems. However, for open quantum… Expand

Pairing and non-Fermi liquid behavior in partially flat-band systems: Beyond nesting physics

- Sharareh Sayyad, E. Huang,
+4 authors H. Aoki - PhysicsPhysical Review B
- 24 March 2019

While multiband systems are usually considered for flat-band physics, here we study one-band models that have flat portions in the dispersion to explore correlation effects in the 2D repulsive… Expand

Nonequilibrium electron dynamics: Formation of the quasiparticle peak

- Sharareh Sayyad, M. Eckstein
- Physics
- 2016

Symmetry-protected exceptional and nodal points in non-Hermitian systems

- Sharareh Sayyad, M. Stålhammar, Lukas Rødland, Flore K. Kunst
- Physics
- 29 April 2022

One of the unique features of non-Hermitian (NH) systems is the appearance of non-Hermitian degeneracies known as exceptional points (EPs). The occurrence of EPs in NH systems requires satisfying… Expand

Nematicity-enhanced superconductivity in systems with a non-Fermi liquid behavior

- Sharareh Sayyad, M. Kitatani, A. Vaezi, H. Aoki
- Physics
- 27 October 2021

Sharareh Sayyad, ∗ Motoharu Kitatani , Abolhassan Vaezi , † and Hideo Aoki 5 Univ. Grenoble Alpes, CNRS, Grenoble INP, Institut Néel, Grenoble 38000, France RIKEN Center for Emergent Matter Sciences… Expand

Non-Hermitian chiral anomalies

- Sharareh Sayyad, Julia D. Hannukainen, A. Grushin
- Physics
- 23 June 2021

The chiral anomaly underlies a broad number of phenomena, from enhanced electronic transport in topological metals to anomalous currents in the quark-gluon plasma. The discovery of topological states… Expand

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