# Half-quantum vortex pair in the polar-distorted B phase of superfluid He3 in aerogels

@article{Tange2020HalfquantumVP, title={Half-quantum vortex pair in the polar-distorted B phase of superfluid He3 in aerogels}, author={Masaki Tange and Ryusuke Ikeda}, journal={Physical Review B}, year={2020}, volume={101} }

Motivated by the recent observation and argument on a large half-quantum vortex (HQV) pair connencted by a Kibble wall in superfluid 3He in nematic aerogels, we numerically study to what extent a huge HQV pair can intrinsically occur with no pinning effect due to the aerogel structure in the polar-distorted B (PdB) phase of superfluid 3He. By fully examining the impurity-scattering induced pairing vertex, the emergence of Anderson's Theorem in the p-wave superfluid is verified in the two…

## Figures and Tables from this paper

## 7 Citations

Half-quantum vortices in nematic and chiral phases of
He3

- Physics
- 2021

We report theoretical results for the stability of half-quantum vortices (HQVs) in the superfluid phases of 3He confined in highly anisotropic Nafen aerogel. Superfluidity of 3He confined in Nafen is…

Impact of strong anisotropy on the phase diagram of superfluidHe3in aerogels

- Physics
- 2019

Recently, one analog of the Anderson's Theorem for the $s$-wave superconductor has attracted much interest in the context of the $p$-wave polar pairing state of superfluid $^3$He in a model aerogel…

Quantum Elliptic Vortex in a Nematic-Spin Bose-Einstein Condensate.

- Physics, MedicinePhysical review letters
- 2021

A quantized vortex spontaneously breaks its axisymmetry, leading to an elliptic vortex in nematic-spin Bose-Einstein condensates with small positive quadratic Zeeman effect, which is considered the Joukowski transform of a conventional vortex.

Fibration, Nexus and Cosmological Composite Topological Defects in Uniaxially Disordered Superfluid $^3$He

- Physics
- 2021

The composited cosmological defects in superfluids of nafen-disorded 3He are discussed in this review article. In spite of the existence of the half quantum vortices (Alice strings), more novel…

One-dimensional nexus objects, network of Kibble-Lazarides-Shafi string walls, and their spin dynamic response in polar-distortedB-phase ofHe3

- Physics
- 2020

The Kibble-Lazarides-Shafi (KLS) domain wall problem in the axion solution of CP violation in QCD has condensed-matter based analogy in the nafen-distorted superfluid $^3$He. Recent experiment in…

String monopoles, string walls, vortex skyrmions, and nexus objects in the polar distorted
B
phase of
He3

- PhysicsPhysical Review Research
- 2020

The composite cosmological objects -- Kibble-Lazarides-Shafi (KLS) walls bounded by strings and cosmic strings terminated by Nambu monopoles -- could be produced during the phase transitions in the…

## References

SHOWING 1-10 OF 44 REFERENCES

Stability of half-quantum vortices in equal-spin pairing states of
He3

- PhysicsPhysical Review B
- 2018

Recent experiments on superfluid $^3$He in globally anisotropic aerogels have shown realization of the polar superfluid phase and of the half-quantum vortices (HQVs) in this phase upon rotation. To…

Impact of strong anisotropy on the phase diagram of superfluidHe3in aerogels

- Physics
- 2019

Recently, one analog of the Anderson's Theorem for the $s$-wave superconductor has attracted much interest in the context of the $p$-wave polar pairing state of superfluid $^3$He in a model aerogel…

Half-quantum vortices and walls bounded by strings in the polar-distorted phases of topological superfluid 3He

- Biology, PhysicsNature Communications
- 2019

It is shown that half-quantum vortices—linear topological defects carrying half quantum of circulation—survive transitions from the polar phase to other superfluid phases with polar distortion in nanostructured confinement 3He.

Analog of the Anderson Theorem for the Polar Phase of Liquid 3He in a Nematic Aerogel

- Physics, MathematicsJournal of Experimental and Theoretical Physics
- 2018

The effect of an aerogel with parallel fibers on the temperatures of 3He transition to superfluid phases differing in the lz projections of the orbital angular momentum on the directions of the…

Quantized vortices in superfluid He-3

- Physics
- 1987

The first measurements on vortices in rotating superfluid /sup 3/He have been conducted in the Low Temperature Laboratory at Helsinki University of Technology during the past five years. These…

Observation of Half-Quantum Vortices in Topological Superfluid ^{3}He.

- Physics, MedicinePhysical review letters
- 2016

An observation of half-quantum vortices (HQVs) in the polar phase of superfluid ^{3}He-A, providing a pathway for studies of unpaired Majorana modes bound to the HQV cores in the Polar-distorted A phase.

Ginzburg-Landau theory of vortices in superfluid 3He-B.

- Physics, MedicinePhysical review. B, Condensed matter
- 1987

The Ginzburg-Landau theory of vortices reproduces the properties of the Transition, accounts well for the measured susceptibility and magnetization, and gives detailed predictions about properties not yet measured, such as the jump of the magnetization in the transition, the shift of the transition line in magnetic field, and the orientation of the double-core vortex.

Possibility of Unconventional Pairing States in Superfluid 3He in Uniaxially Anisotropic Aerogels

- Physics
- 2014

Recent two experiments on superfluid 3He in uniaxially anisotropic aerogels have suggested the presence of pairing states essentially differing from those appearing in the bulk liquid. In this work,…

Lifshitz Transition in the Double-Core Vortex in ^{3}He-B.

- Physics, MedicinePhysical review letters
- 2015

This work applies the spectrum of fermion states localized within the vortex core of a weak-coupling p-wave superfluid to the rotational dynamics of vortices in superfluid ^{3}He-B and finds an explanation for the observed slow mode.

Two Roads to Antispacetime in Distorted B Phase: Kibble Wall and Half-Quantum Vortex

- PhysicsJETP Letters
- 2019

We consider the emergent tetrad gravity and the analog of antispacetime realized in the recent experiments on the composite defects in superfluid 3He (J.T. Mäkinen et al., Nat. Comm. 10, 237 (2019)):…