@misc{10481/103893,
year = {2025},
month = {3},
url = {https://hdl.handle.net/10481/103893},
abstract = {Excited-state quantum phase transitions extend the quantum phase transition concept beyond the ground state and offer insights into the complex behavior of quantum systems. In the present work we assess the use of
the multiple quantum coherence spectrum as a valid tool to probe excited-state quantum phase transitions within
the framework of the Lipkin-Meshkov-Glick model. The time dependence and the long-time average of the
multiple quantum coherence spectrum reveal the intricate dynamics that stems from the existence of singularities
in the excited-state spectrum of a quantum many-body system.},
organization = {Slovenian Research and Innovation Agency
	J1-4387},
organization = {National Natural Science Foundation of China (NSFC)
	11805165},
organization = {Zhejiang Provincial Nature Science Foundation
	LY20A050001},
organization = {ERDF, A way of making Europe},
organization = {European Union (EU)},
organization = {FEDER-UHU project
	EPIT1462023},
organization = {Spanish Ministerio de Universidades Margarita Salas Fellowship},
organization = {Spanish Government
	UNHU-15CE-2848},
publisher = {American Physical Society},
title = {Characterizing the Lipkin-Meshkov-Glick excited-state spectrum through the quantum coherence spectrum},
doi = {10.1103/PhysRevA.111.032209},
author = {Wang, Qian and Khalouf Rivera, Jamil and Pérez Bernal, Francisco},
}