- Jan 2020 – April 2020, Project for QFT course
- Guide: Dr. Yogesh Srivastav, School of Physical Sciences, NISER
Abstract: Quantum entanglement is a phenomena of quantum mechanics, in which the properties of two systems are correlated even though they are far apart from each other. Even though has many applications in quantum information theory and quantum computation, a theoretical research is going on to understand it in Quantum field theory, many-body theory and other areas of physics.
This report is organised as follows. In the fi rst section we introduce the phenomena of entanglement.
Then in the next two sections some measures of entanglement and some of their properties are discussed. The quantity that is of much interest to us is the entanglement entropy. This tells us about the extent to which the systems are entangled. The purpose of this report is to obtain the entanglement entropy in QFT. This is done through the replica trick in the Euclidean path integral representation.