N.D. Hari Dass earned his PhD from the University of California, Santa Barbara, and has since conducted research and taught at prestigious institutions worldwide, including the University of California, Los Angeles, the Max Planck Institute for Physics in Munich, the Niels Bohr Institute in Copenhagen, CERN in Geneva, NIKHEF in Amsterdam, the Universities of Utrecht and Amsterdam, and KEK in Japan. He has also worked in India at the Raman Research Institute, Institute of Mathematical Sciences, Indian Institute of Science, Chennai Mathematical Institute, and Tata Institute of Fundamental Research.

Prof. Hari Dass is a Fellow of the National Academy of Sciences in India and has published over 60 peer-reviewed articles on his research areas, which include lattice gauge theory, quantum field theory, gravitation and astrophysics, and foundations of quantum mechanics. He has extensive teaching experience at the undergraduate and graduate levels in both the USA and India.

He is the author of the book "The Principles of Thermodynamics" (CRC Press, 2013), and the revised edition "The Essentials of Thermodynamics" (SRI Books, 2021).

Explains effective string theories with many self-contained chapters

Provides in a single book the technical information useful for many areas of high-energy physics

Is an essential reading for non-perturbative aspects of unitarity and analyticity in quantum field theories