63 citations · 128 across the 8 of their papers we have counts for
9 papers
Tracking the Catastrophic Collapse of Hybrid Exciton-Phonon Order in a Quantum Material
Omar Abdul-Aziz, Danilo Comini, Johannes Lang +8
Revealing the interactions binding electronic and lattice components of cooperative quantum order is central to sculpting new states of matter. This challenge is epitomized by the…
Fermion quantum criticality far from equilibrium
Rohan Mittal, Tom Zander, Johannes Lang +1
Driving a quantum system out of equilibrium while preserving its subtle quantum mechanical correlations on large scales presents a major challenge, both fundamentally and for techn…
Numerical renormalization of glassy dynamics
Johannes Lang, Subir Sachdev, Sebastian Diehl
The quench dynamics of glassy systems are challenging. Due to aging, the system never reaches a stationary state but instead evolves on emergent scales that grow with its age. This…
Monitored interacting Dirac fermions
Thomas Martin Müller, Michael Buchhold, Sebastian Diehl
We analytically study interacting Dirac fermions, described by the Thirring model, under weak local particle number measurements with monitoring rate . This system maps to a bos…
Replica symmetry breaking in spin glasses in the replica-free Keldysh formalism
Johannes Lang, Subir Sachdev, Sebastian Diehl
We show that the algebra of Parisi ultrametric matrices is recovered by the real-time, replica-free, Dyson-Keldysh equations of infinite-range quantum spin glasses in the late time…
Universality in driven open quantum matter
Lukas M. Sieberer, Michael Buchhold, Jamir Marino +1
Universality is a powerful concept, which enables making qualitative and quantitative predictions in systems with extensively many degrees of freedom. It finds realizations in almo…
Robustness and measurement-induced percolation of the surface code
Thomas Botzung, Michael Buchhold, Sebastian Diehl +1
We examine the robustness of a logical qubit in the planar surface code subject to 'measurement-errors', i.e., to local Pauli measurements at known positions. This yields a measure…
Field theory for the dynamics of the open model
Johannes Lang, Michael Buchhold, Sebastian Diehl
A field theory approach for the nonequilibrium relaxation dynamics in open systems at late times is developed. In the absence of conservation laws, all excitations are subject to d…
Dynamics of measured many-body quantum chaotic systems
A. Altland, M. Buchhold, S. Diehl +1
We consider the dynamics of continuously measured many-body chaotic quantum systems. Focusing on the observable of state purification, we analytically describe the limits of strong…