Abstract
The authors extend the potential energy landscape formalism to the case of quantum liquids and how they approach their glass state.
Highlights
As a liquid is supercooled toward its glass state, the liquid’s dynamics slows down abruptly, with relaxation times increasing by ≈10–15 orders of magnitude in a small temperature range [1,2]
IV C, we show that the ring-polymers are collapsed at the inherent structures (IS)
We extended the potential energy landscape (PEL) formalism, originally proposed to study classical liquids and glasses, to the case of quantum liquids
Summary
As a liquid is supercooled toward its glass state, the liquid’s dynamics slows down abruptly, with relaxation times increasing by ≈10–15 orders of magnitude in a small temperature range [1,2]. The slowdown of most known supercooled liquids approaching the glass state can be explained using classical theories [e.g., mode coupling theory (MCT) [10]], quantum effects can play a relevant role in the case of light elements, including H2 and He [14,15]. Other studies on spin glasses and liquids indicate that the addition of quantum fluctuations can have a counterintuitive effect on the dynamics of the glass forming system where the quantum system exhibits a slower dynamics than its classical counterpart [24,25].
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