Work

Smeared phase transition in the dissipative random quantum Ashkin-Teller model

Year: 2026

Type: article

Abstract: We study the effects of dissipation in the phase diagram of the random quantum Ashkin-Teller model by means of a generalization of the strong-disorder renormalization group combined with adiabatic renormalization. This model has three phases and three quantum phase transitions. We demonstrate that the combined effect of Ohmic dissipation and quenched disorder smears two out of the three quantum phase transitions. Our analytical theory allows us to understand why one of the phase transitions remains sharp. This is due to a cancellation of the dissipation effects on the nontrivial nature of the intertwined order parameter of one of the phases.

Source: Physical review. B./Physical review. B

DOI: 10.1103/mnwg-hd8m

Authors: Pedro S. Farinas, Rajesh Narayanan, José A. Hoyos

Institutions: Universidade de São Paulo, Indian Institute of Technology Madras

Language: English

Topic: Quantum many-body systems

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Department of Science and Technology, Ministry of Science and Technology, India, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Universidade de São Paulo

Award: G987154045