Floquet-engineered Emergent Massive Nambu-Goldstone Modes
- URL: http://arxiv.org/abs/2409.01902v4
- Date: Sun, 27 Jul 2025 21:30:29 GMT
- Title: Floquet-engineered Emergent Massive Nambu-Goldstone Modes
- Authors: Yang Hou, Zhanpeng Fu, Roderich Moessner, Marin Bukov, Hongzheng Zhao,
- Abstract summary: We implement massive Nambu-Goldstone quasi-particles in driven many-body systems.<n>We certify the existence of the massive Nambu-Goldstone mode from the dynamics of specific observables.
- Score: 0.6757476692230008
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We present a general framework to implement massive Nambu-Goldstone quasi-particles in driven many-body systems. The underlying mechanism leverages an explicit Lie group structure imprinted into an effective Hamiltonian that governs the dynamics of slow degrees of freedom; the resulting emergent continuous symmetry is weakly explicitly broken, giving rise to a massive Nambu-Goldstone mode, with a spectral mass gap scaling linearly with the drive period. We discuss explicit and experimentally implementable realizations, such as Heisenberg-like spin models that support gapped spin-wave excitations. We provide a protocol to certify the existence of the massive Nambu-Goldstone mode from the dynamics of specific observables, and analyse the dispersion spectrum and their lifetime in the presence of weak explicit symmetry breaking.
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