20 papers
Liouvillian Geometry of Multidimensional Spectra: Pathway Transport and Observational Holonomy in Open Quantum Systems
Eric R. Bittner, Carlos Silva-Acuña, Carlos Silva-Acuña +1
Liouville pathways provide the conceptual foundation for interpreting multidimensional spectroscopies and are commonly represented as independent contributions to the nonlinear res…
Geometric Response in Open Quantum Systems: Coherence, Curvature, and Susceptibility
Eric R. Bittner, Carlos Silva-Acuña
We develop a response-geometric framework for open quantum systems by decomposing the stationary-state response tensor into symmetric and antisymmetric sectors. The symmetric secto…
Mixed response geometry and critical crossover in the Ising model
Eric R. Bittner
We develop a geometric formulation of thermodynamic response in interacting spin systems and apply it to the two-dimensional Ising model. Treating inverse temperature and magnetic…
The Helical SYK Model and Emergent Infrared Integrability
Gustavo Valdivia-Mera, Bhavay Tyagi, Eric R. Bittner +1
We construct a helical generalization of the Sachdev-Ye-Kitaev (SYK) model in dimensions, built from left- and right-moving Majorana fermions with local quartic interactions…
Holonomy and Complementarity in Open Quantum Systems
Eric R Bittner
Complementarity relations constrain the distribution of coherence, predictability, and openness in quantum systems. Here we show that, in open quantum systems, these local constrai…
Detection Defines Dephasing in Two-Dimensional Electronic Spectroscopy of Materials: Coherent Field Emission versus Incoherent Population Observables
Simón Paiva-Ortega, Simón Paiva-Ortega, Hao Li +3
The homogeneous spectral linewidth associated with light-matter interactions is a fundamental descriptor of the optical properties of materials, governed by the quantum dynamics of…