Work

Exciton-driven coherent dressing in transient absorption

Year: 2026

Type: preprint

Abstract: While coherent excitons have recently been observed to dress electronic states in time- and angle-resolved photoemission spectroscopy (tr-ARPES), exciton-driven dressing in optical spectroscopy remains largely unexplored. This work develops a theoretical and computational approach to exciton-driven dressing effects in transient absorption spectroscopy in the time-dependent adiabatic GW formalism and derives two symmetry- and band topology-protected selections rules for exciton-dressed transient absorption, unique from tr-ARPES. We then numerically calculate exciton-dressed transient absorption spectra of monolayer MoS2 and demonstrate the selection rules and their lifting after symmetry breaking.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.2610.36263

Authors: Wu, Jinyuan, Shu, Chang, Chan, Yang-hao, Qiu, Diana Y.

Institutions: Yale University, University of Michigan, Institute of Atomic and Molecular Sciences, Academia Sinica, Academia Sinica

Language: English

Topic: 2D Materials and Applications

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W7224087113

Cites: 2

Cited by:

Related to: 10