270 citations · 1.1k across the 9 of their papers we have counts for
9 papers
Quasiparticle origin of dynamical quantum phase transitions
Jad C. Halimeh, Maarten Van Damme, Valentin Zauner-Stauber +1
Considering nonintegrable quantum Ising chains with exponentially decaying interactions, we present matrix product state results that establish a connection between low-energy quas…
Topological nature of spinons and holons: Elementary excitations from matrix product states with conserved symmetries
V. Zauner-Stauber, L. Vanderstraeten, J. Haegeman +2
We develop variational matrix product state (MPS) methods with symmetries to determine dispersion relations of one dimensional quantum lattices as a function of momentum and preset…
Faster Methods for Contracting Infinite 2D Tensor Networks
M. T. Fishman, L. Vanderstraeten, V. Zauner-Stauber +2
We revisit the corner transfer matrix renormalization group (CTMRG) method of Nishino and Okunishi for contracting two-dimensional (2D) tensor networks and demonstrate that its per…
Probing the anomalous dynamical phase in long-range quantum spin chains through Fisher-zero lines
Valentin Zauner-Stauber, Jad C. Halimeh
Using the framework of infinite Matrix Product States, the existence of an \textit{anomalous} dynamical phase for the transverse-field Ising chain with sufficiently long-range inte…
Anomalous dynamical phase in quantum spin chains with long-range interactions
Ingo Homrighausen, Nils O. Abeling, Valentin Zauner-Stauber +1
The existence or absence of non-analytic cusps in the Loschmidt-echo return rate is traditionally employed to distinguish between a regular dynamical phase (regular cusps) and a tr…
Variational optimization algorithms for uniform matrix product states
V. Zauner-Stauber, L. Vanderstraeten, M. T. Fishman +2
We combine the Density Matrix Renormalization Group (DMRG) with Matrix Product State tangent space concepts to construct a variational algorithm for finding ground states of one di…
Prethermalization and Persistent Order in the Absence of a Thermal Phase Transition
Jad C. Halimeh, Valentin Zauner-Stauber, Ian P. McCulloch +3
We numerically study the dynamics after a parameter quench in the one-dimensional transverse-field Ising model with long-range interactions ( with distance ), for…
Dynamical phase diagram of spin chains with long-range interactions
Jad C. Halimeh, Valentin Zauner-Stauber
Using an infinite Matrix Product State (iMPS) technique based on the time-dependent variational principle (TDVP), we study two major types of dynamical phase transitions (DPT) in t…
Symmetry Breaking and Convex Set Phase Diagrams for the q-state Potts Model
Valentin Zauner-Stauber, Frank Verstraete
We demonstrate that the occurrence of symmetry breaking phase transitions together with the emergence of a local order parameter in classical statistical physics is a consequence o…