Triangular Pair Density Wave in Confined Superfluid 
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Yapa, P. Senarath; Boyack, Rufus; Maciejko, Joseph

doi:10.1103/physrevlett.128.015301

Cited by 8 publications

(3 citation statements)

References 34 publications

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“…By contrast, symmetry-breaking fields, such as that imposed on 3 He by nematic aerogel, lead to topological protection [132][133][134][135][136]], analogous to Cosmological Lazarides-Shafi domain walls. In 3 He confined to slab geometry, such domain walls are at the heart of the putative crystalline superfluid phase with spontaneously broken translation symmetry [62,[137][138][139] (see also [140][141][142] for transport experiments with stepped confinement). Here the mechanism of nucleation of the domain walls is a major outstanding question, that may be related to the A-B transition puzzle.…”

Section: Preliminary Results For a Highly Disordered Initial Statementioning

confidence: 99%

A-B transition in superfluid 3He and cosmological phase transitions

Hindmarsh,

Sauls,

Zhang

et al. 2024

Preprint

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First order phase transitions in the very early universe are a prediction of many extensions of the Standard Model of particle physics and could provide the departure from equilibrium needed for a dynamical explanation of the baryon asymmetry of the Universe. They could also produce gravitational waves of a frequency observable by future space-based detectors such as the Laser Interferometer Space Antenna (LISA). All calculations of the gravitational wave power spectrum rely on a relativistic version of the classical nucleation theory of Cahn-Hilliard and Langer, due to Coleman and Linde. The high purity and precise control of pressure and temperature achievable in the laboratory made the first-order A to B transition of superfluid 3He ideal for test of classical nucleation theory. As Leggett and others have noted the theory fails dramatically. The lifetime of the metastable A phase is measurable, typically of order minutes to hours, far faster than classical nucleation theory predicts. If the nucleation of B phase from the supercooled A phase is due to a new, rapid intrinsic mechanism that would have implications for first-order cosmological phase transitions as well as predictions for gravitational wave (GW) production in the early universe. Here we discuss studies of the A-B phase transition dynamics in 3He, both experimental and theoretical, and show how the computational technology for cosmological phase transition can be used to simulate the dynamics of the A-B transition, support the experimental investigations of the A-B transition in the QUEST-DMC collaboration with the goal of identifying and quantifying the mechanism(s) responsible for nucleation of stable phases in ultra-pure metastable quantum phases.

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Section: Preliminary Results For a Highly Disordered Initial Statementioning

confidence: 99%

A-B transition in superfluid 3He and cosmological phase transitions

Hindmarsh,

Sauls,

Zhang

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…By contrast, symmetry-breaking fields, such as that imposed on 3 He by nematic aerogel, lead to topological protection [144][145][146][147][148], analogous to cosmological Lazarides-Shafi domain walls. In 3 He confined to slab geometry, such domain walls are at the heart of the putative crystalline superfluid phase with spontaneously broken translation symmetry [64,[149][150][151] (see also [152][153][154] for transport experiments with stepped confinement). Here the mechanism of nucleation of the domain walls is a major outstanding question that may be related to the A-B transition puzzle.…”

mentioning

confidence: 99%

A-B Transition in Superfluid $$^3$$He and Cosmological Phase Transitions

Hindmarsh,

Sauls,

Zhang

et al. 2024

J Low Temp Phys

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First-order phase transitions in the very early universe are a prediction of many extensions of the Standard Model of particle physics and could provide the departure from equilibrium needed for a dynamical explanation of the baryon asymmetry of the Universe. They could also produce gravitational waves of a frequency observable by future space-based detectors such as the Laser Interferometer Space Antenna. All calculations of the gravitational wave power spectrum rely on a relativistic version of the classical nucleation theory of Cahn-Hilliard and Langer, due to Coleman and Linde. The high purity and precise control of pressure and temperature achievable in the laboratory made the first-order A to B transition of superfluid $$^3$$ 3 He ideal for test of classical nucleation theory. As Leggett and others have noted, the theory fails dramatically. The lifetime of the metastable A phase is measurable, typically of order minutes to hours, far faster than classical nucleation theory predicts. If the nucleation of B phase from the supercooled A phase is due to a new, rapid intrinsic mechanism that would have implications for first-order cosmological phase transitions as well as predictions for gravitational wave production in the early universe. Here we discuss studies of the A-B phase transition dynamics in $$^3$$ 3 He, both experimental and theoretical, and show how the computational technology for cosmological phase transition can be used to simulate the dynamics of the A-B transition, support the experimental investigations of the A-B transition in the QUEST-DMC collaboration with the goal of identifying and quantifying the mechanism(s) responsible for nucleation of stable phases in ultra-pure metastable quantum phases.

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“…Finite-size effects play a significant role in, e.g., technologically-relevant quantum-dots [7] or properties of nanoparticles [8], where magnetic phase transitions can be strongly altered or even completely suppressed compared to the bulk material [9] or novel collective behaviours can emerge [10,11]. Similarly, in superfluid 3 He, surface scattering of Cooper pairs can lead to stabilisation of novel superfluid phases [12,13].…”

mentioning

confidence: 99%

Surface-dominated finite size effects in nanoconfined superfluid helium

Varga¹,

Undershute²,

Davis³

2022

Preprint

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Superfluid 4 He (He-II) is a widely studied model system for exploring finite-size effects in strongly confined geometries. Here we study He-II confined into mm-scale channels of 25 and 50 nm height, at arbitrarily high pressures using a nanofluidic Helmholtz resonator. We find that the superfluid density is measurably suppressed in the confined geometry from the transition temperature down to 0.6 K. Importantly, this suppression can be accounted for by roton-like thermal excitation with an energy gap of 5 K. This finding sheds light on the unexplained lack of finite-size scaling of suppression of the superfluid density. Additionally, the strong confinement allows for observation of the Kosterlitz-Thouless transition for the first time at arbitrary pressure.

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Triangular Pair Density Wave in Confined Superfluid He3

Cited by 8 publications

References 34 publications

A-B transition in superfluid 3He and cosmological phase transitions

A-B transition in superfluid 3He and cosmological phase transitions

A-B Transition in Superfluid $$^3$$He and Cosmological Phase Transitions

Surface-dominated finite size effects in nanoconfined superfluid helium

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