SIUC Physics Seminar
School of Physics and Applied Physics, Southern Illinois University--Carbondale
2026 February 13 Friday 4:00 PM:
Physics Seminar in Neckers 440
Title: Entanglement Entropy in a Curved Lattice of Quantum Harmonic Oscillators
Speaker: Harshavardhan Reddy Nareddula
Affiliation: Southern Illinois University--Carbondale
Abstract:
Entanglement is a purely quantum phenomenon. If the whole system is pure,
the best way to
quantify entanglement is by its entanglement entropy, which is described as
the Von-Neumann entropy of either subsystem. This implies that vacuum has
entropy too. It has been shown that the entanglement entropy of a ball of
QHOs in a lattice in vacuum is proportional to the surface area of the ball.
In this study we demonstrate the effect on entropy when the lattice sits in
a curved space. We show that the entropy decreases. Furthermore, the entropy
decrease is proportional to the surface area decrease due to the curvature.
This demonstrates a further link between surface area and entropy.
Last updated on
by K V Shajesh
(kvshajesh@gmail.com).