Hennigar Robie A, Mann Robert B, Tjoa Erickson
Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario, Canada, N2L 3G1.
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.
Phys Rev Lett. 2017 Jan 13;118(2):021301. doi: 10.1103/PhysRevLett.118.021301. Epub 2017 Jan 12.
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.
我们展示了我们认为是黑洞热力学中“λ线”相变的首个例子。这是一条（连续的）二阶相变线，在液氦⁴的情况下，它标志着超流性的开始。这种相变发生在洛夫洛克引力中的一类渐近反德西特毛黑洞中，其中一个实标量场与引力共形耦合。我们讨论了这种相变的起源，并概述了它（或其推广形式）可能发生的情况。
