QCD Thermodynamics from Lattice Gauge Theory

Declaration I state that the work embodied in this thesis forms my own contribution to the research work carried out under the guidance of Prof. Rajiv V. Gavai. This work has not been submitted for any other degree to this or any other University or body. Whenever references have been made to previous works of others, it has been clearly indicated. (signature of the supervisor) (signature of the candidate) Acknowledgements I would like to thank my thesis supervisor Prof. Rajiv V. Gavai for his patient guidance and teaching. I would also like to thank Prof. Sourendu Gupta who has taught me many things and in whose collaboration part of this thesis work was done. Collaboration and help of Dr. Rajarshi Ray is also gratefully acknowledged. Without the support and help of all my friends, family members and the members of the theoretical physics group it would have been impossible for me to finish this thesis. I would also like to acknowledge the partial financial support of the TIFR Alumni Association.