TY - JOUR
T1 - Structural relaxation in quantum supercooled liquids
T2 - A mode-coupling approach
AU - Das, Ankita
AU - Rabani, Eran
AU - Miyazaki, Kunimasa
AU - Harbola, Upendra
N1 - Publisher Copyright:
© 2021 Author(s).
PY - 2021/1/7
Y1 - 2021/1/7
N2 - We study supercooled dynamics in a quantum hard-sphere liquid using quantum mode-coupling formulation. In the moderate quantum regime, classical cage effects lead to slower dynamics compared to the strongly quantum regime, where tunneling overcomes classical caging, leading to faster relaxation. As a result, the glass transition critical density can become significantly higher than for the classical liquids. A perturbative approach is used to solve time dependent quantum mode-coupling equations to study in detail the dynamics of the supercooled liquid in the moderate quantum regime. Similar to the classical case, the relaxation time shows the power-law increase with the increase in the density in the supercooled regime. However, the power-law exponent is found to be dependent on the quantumness; it increases linearly as the quantumness is increased in the moderate quantum regime.
AB - We study supercooled dynamics in a quantum hard-sphere liquid using quantum mode-coupling formulation. In the moderate quantum regime, classical cage effects lead to slower dynamics compared to the strongly quantum regime, where tunneling overcomes classical caging, leading to faster relaxation. As a result, the glass transition critical density can become significantly higher than for the classical liquids. A perturbative approach is used to solve time dependent quantum mode-coupling equations to study in detail the dynamics of the supercooled liquid in the moderate quantum regime. Similar to the classical case, the relaxation time shows the power-law increase with the increase in the density in the supercooled regime. However, the power-law exponent is found to be dependent on the quantumness; it increases linearly as the quantumness is increased in the moderate quantum regime.
UR - http://www.scopus.com/inward/record.url?scp=85099266183&partnerID=8YFLogxK
U2 - 10.1063/5.0032085
DO - 10.1063/5.0032085
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C2 - 33412873
AN - SCOPUS:85099266183
SN - 0021-9606
VL - 154
JO - Journal of Chemical Physics
JF - Journal of Chemical Physics
IS - 1
M1 - 014502
ER -