JNU | RTI | Directory | Contact Us | Emergency Services | List of Holidays
-A A +A

SPS is organising a seminar by Amit Dutta

SPS is organising a seminar by Amit Dutta

Event From Date
Event End Date
Event Title
SPS is organising a seminar by Amit Dutta
Event Details

 

Physics Seminar of the School of Physical Sciences
---------------------------------------------------------



Dynamical Quantum Phase Transitions and Topological Order Parameter

 

Amit Dutta
(Indian Institute of Technology - Kanpur)
 

Date: November 7, 2017 (Tuesday)
Time: 17:00 hrs  (5:00 pm)
Venue: Seminar Room, First Floor, School of Physical Sciences (SPS), JNU
 

Abstract: The physics of quantum phase transitions and corresponding universality class are well studied. Recently, there has been a proposal of a novel non-equilibrium quantum phase transition occurring in the real time evolution of a closed quantum system following a sudden quench  or a slow ramp. Corresponding non-analyticities are manifested at different instants of real time  in the so-called `Loschmidt echo' (or the rate function of the return probability). At these instants, the lines of Fisher (Yang-Lee) zeros cross the real time axis.  Starting from the basics of quantum phase transitions in models under consideration, we shall show how these dynamical phase transitions emerge. Interestingly, these transitions  are characterized by  a topological order parameter that exhibits  a distinct jump of unit magnitude marking each dynamical transition.

A warm welcome to the modified and updated website of the Centre for East Asian Studies. The East Asian region has been at the forefront of several path-breaking changes since 1970s beginning with the redefining the development architecture with its State-led development model besides emerging as a major region in the global politics and a key hub of the sophisticated technologies. The Centre is one of the thirteen Centres of the School of International Studies, Jawaharlal Nehru University, New Delhi that provides a holistic understanding of the region.

Initially, established as a Centre for Chinese and Japanese Studies, it subsequently grew to include Korean Studies as well. At present there are eight faculty members in the Centre. Several distinguished faculty who have now retired include the late Prof. Gargi Dutt, Prof. P.A.N. Murthy, Prof. G.P. Deshpande, Dr. Nranarayan Das, Prof. R.R. Krishnan and Prof. K.V. Kesavan. Besides, Dr. Madhu Bhalla served at the Centre in Chinese Studies Programme during 1994-2006. In addition, Ms. Kamlesh Jain and Dr. M. M. Kunju served the Centre as the Documentation Officers in Chinese and Japanese Studies respectively.

The academic curriculum covers both modern and contemporary facets of East Asia as each scholar specializes in an area of his/her interest in the region. The integrated course involves two semesters of classes at the M. Phil programme and a dissertation for the M. Phil and a thesis for Ph. D programme respectively. The central objective is to impart an interdisciplinary knowledge and understanding of history, foreign policy, government and politics, society and culture and political economy of the respective areas. Students can explore new and emerging themes such as East Asian regionalism, the evolving East Asian Community, the rise of China, resurgence of Japan and the prospects for reunification of the Korean peninsula. Additionally, the Centre lays great emphasis on the building of language skills. The background of scholars includes mostly from the social science disciplines; History, Political Science, Economics, Sociology, International Relations and language.

Several students of the centre have been recipients of prestigious research fellowships awarded by Japan Foundation, Mombusho (Ministry of Education, Government of Japan), Saburo Okita Memorial Fellowship, Nippon Foundation, Korea Foundation, Nehru Memorial Fellowship, and Fellowship from the Chinese and Taiwanese Governments. Besides, students from Japan receive fellowship from the Indian Council of Cultural Relations.