Discrete Time Crystals in Noninteracting Dissipative Systems

• URL: http://arxiv.org/abs/2511.09852v1
• Date: Fri, 14 Nov 2025 01:13:04 GMT
• Title: Discrete Time Crystals in Noninteracting Dissipative Systems
• Authors: Gourab Das, Saptarshi Saha, Rangeet Bhattacharyya,
• Abstract summary: Many-body quantum systems exhibit time-translation symmetry breaking and settle in a discrete time crystalline (DTC) phase.<n>We propose and exemplify a DTC phase in a noninteracting system that owes its stability to environmental dissipation.
• Score: 2.725073066065677
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: Many-body quantum systems, under suitable conditions, exhibit time-translation symmetry breaking and settle in a discrete time crystalline (DTC) phase -- an out-of-equilibrium quantum phase of matter. The defining feature of DTC is a robust subharmonic response. However, the DTC phase is fragile in the presence of environmental dissipation. Here, we propose and exemplify a DTC phase in a noninteracting system that owes its stability to environmental dissipation. The lifetime of this DTC is independent of initial conditions and the size of the system, though it depends on the frequency of the external driver. We experimentally demonstrate this realization of DTC using Nuclear Magnetic Resonance spectroscopy.

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