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Weakly driven quantum symmetries

Project description

Study investigates non-linear phenomena in strongly correlated materials

Non-thermal phase transitions are a new paradigm of exotic non-equilibrium physics of strongly correlated materials. The ERC-funded DrumS project aims to stabilise these non-thermal states by weakly driving quantum many-body systems. The ultimate goal is to demonstrate that a strong response to a weak drive is a generic property of setups. Driving compensates symmetry breaking caused by perturbations and stabilises large values of potentially useful quantities. DrumS findings on non-linear phenomena in strongly correlated matter will open up exciting possibilities for condensed matter physics, such as synthetic quantum matter, and other areas of physics where symmetries play a fundamental role.

Objective

The DrumS project will establish a new paradigm for stabilizing exotic non-thermal states by weakly driving quantum many-body systems. Present research theoretically predicts peculiar non-thermal states in fine-tuned models with additional symmetries, for example, in integrable models with macroscopically many conservation laws. However, these models and their exact symmetries cannot be accurately realized in solid-state experiments. My hypothesis is that weak driving can boost the underlying symmetries in realistic setups and have a substantial effect on quantities protected by approximate symmetries, for example, on approximately conserved operators. The basic idea can be illustrated with a greenhouse, where windows ensure approximate conservation of energy. A weak driving by sun can have a considerable effect as it only compensates for the weak losses and stabilizes a high temperature that is not proportional to the drive. The ambitious goal of DrumS is to demonstrate that a strong response to a weak drive is a generic property of setups where driving compensates for weak symmetry breaking perturbations and stabilizes large expectation values of potentially useful quantities. While state of the art studies consider detrimental effects of perturbations, DrumS will turn approximate symmetries into a resource for novel out-of-equilibrium phenomena and technological applications. The theoretical program will promote the practical significance of fascinating idealized models, such as integrable, many-body localized, and lattice gauge theories. Driving protocols will compensate unavoidable integrability and gauge breaking to realize peculiar energy, spin and particle transport or synchronize resonant states into a superconducting response. DrumS will grow a new branch of non-linear phenomena, with exciting possibilities for realization in condensed matter experiments, synthetic quantum simulators, and other areas of physics where symmetries play a fundamental role.

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Keywords

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Topic(s)

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HORIZON-ERC - HORIZON ERC Grants

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Call for proposal

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(opens in new window) ERC-2022-STG

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Host institution

INSTITUT JOZEF STEFAN
Net EU contribution

Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.

€ 1 446 893,75
Address
Jamova 39
1000 Ljubljana
Slovenia

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Region
Slovenija Zahodna Slovenija Osrednjeslovenska
Activity type
Research Organisations
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Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

€ 1 446 893,75

Beneficiaries (1)

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