Vortical Effects for Free Fermions on Anti-De Sitter Space-Time

Abstract

Here, we study a quantum fermion field in rigid rotation at finite temperature on anti-de Sitter space. We assume that the rotation rate $\Omega$ is smaller than the inverse radius of curvature ${\ell }^{-1}$, so that there is no speed of light surface and the static (maximally-symmetric) and rotating vacua coincide. This assumption enables us to follow a geometric approach employing a closed-form expression for the vacuum two-point function, which can then be used to compute thermal expectation values (t.e.v.s). In the high temperature regime, we find a perfect analogy with known results on Minkowski space-time, uncovering curvature effects in the form of extra terms involving the Ricci scalar $R$. The axial vortical effect is validated and the axial flux through two-dimensional slices is found to escape to infinity for massless fermions, while for massive fermions, it is completely converted into the pseudoscalar density $-i\bar{\psi }{\gamma }^5\psi$. Finally, we discuss volumetric properties such as the total scalar condensate and the total energy within the space-time and show that they diverge as $[1-{\ell }^2{\Omega }^2{]}^{-1}$ in the limit $\Omega \to {\ell }^{-1}$.

54 pages, 10 figures

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Cited by in corpus (1)

• Chiral Vortical Effect in Extended Rarita-Schwinger Field Theory and Chiral Anomaly