title: Superfluid Black Holes.
abstract: We present what we believe is the first example of a "λ-line" phase transition in black hole thermodynamics. This is a line of (continuous) second order phase transitions which in the case of liquid ^{4}He marks the onset of superfluidity. The phase transition occurs for a class of asymptotically anti-de Sitter hairy black holes in Lovelock gravity where a real scalar field is conformally coupled to gravity. We discuss the origin of this phase transition and outline the circumstances under which it (or generalizations of it) could occur.
authors.affiliation: Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario, Canada, N2L 3G1.
authors.forename: Robie A
authors.initials: RA
authors.lastname: Hennigar
authors.affiliation: Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario, Canada, N2L 3G1.
authors.forename: Robert B
authors.initials: RB
authors.lastname: Mann
authors.affiliation: Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario, Canada, N2L 3G1 and Division of Physics and Applied Physics, Nanyang Technological University, Singapore S637371, Singapore.
authors.forename: Erickson
authors.initials: E
authors.lastname: Tjoa