English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Pro

Presents the zaia usage as premium feature

ZAIA

Presents AI Discovery search usage as a premium feature

AI Discovery

Presents AI Discovery explain and summary usage as a premium feature

Content Analysis

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Presents the pdf analysis as premium feature

PDF Analysis

1500 Top-up

3000 Top-up

Zendy Basic

2500 Top-up

Zendy Unlimited

Presents the access of premium content as premium feature

Premium Content

We study the orbital angular momentum (OAM) $L_z$ in two dimensional chiral$(p_x+ip_y)^{\nu}$-wave superfluids (SF) of $N$ fermions on a disc at zerotemperature, in terms of spectral asymmetry and spectral flow. It is shown that$L_z=\nu N/2$ for any integer $\nu$, in the BEC regime. In contrast, in the BCSlimit, while the OAM is $L_z=N/2$ for the $p+ip$-wave SF, for chiral SF with$\nu\geq2$, the OAM is remarkably suppressed as $L_z=N\timesO(\Delta_0/\varepsilon_F)\ll N$, where $\Delta_0$ is the gap amplitude and$\varepsilon_F$ is the Fermi energy. We demonstrate that the difference betweenthe $p+ip$-wave SF and the other chiral SFs in the BCS regimes originates fromthe nature of edge modes and related depairing effects.

Orbital Angular Momentum and Spectral Flow in Two Dimensional Chiral Superfluids