Skip to main content
Skip to main menu Skip to spotlight region Skip to secondary region Skip to UGA region Skip to Tertiary region Skip to Quaternary region Skip to unit footer


Entanglement area law in superfluid helium

Adrian Del Maestro
Adrian Del Maestro
Professor and Head Department of Physics & Astronomy
University of Tennessee
Physics Auditorium (2020) and Zoom
Departmental Colloquium

Area laws were first discovered by Bekenstein and Hawking, who found that the entropy of a black hole grows proportional to its surface area, and not its volume. Entropy area laws have since become a fundamental part of modern physics, from the holographic principle in quantum gravity to ground state wavefunctions of quantum matter, where entanglement entropy is generically found to obey area law scaling. As no experiments are currently capable of directly probing the entanglement area law in naturally occurring many-body systems, evidence of its existence is based on studies of simplified theories. Using new exact microscopic ground state Monte Carlo simulations of superfluid helium, we demonstrate for the first time area law scaling of entanglement entropy in a real quantum liquid in three dimensions. We validate the fundamental principles underlying its physical origin, and explore an "entanglement equation of state" showing how it depends on the density of the superfluid.

Your gift helps to fund research, travel, and field experience for students and faculty.

Click Here to Learn More About Giving