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SPS is organizing a seminar by K. N. Raghavan

SPS is organizing a seminar by K. N. Raghavan

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SPS is organizing a seminar by K. N. Raghavan
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Maths Seminar of the School of Physical Sciences
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Theta Series on Lattices of Indefinite Signature

Sibasish Banerjee 
Commissariat a l'Energie Atomique (CEA), Saclay

Date: April 7, 2017 (Friday)
Time: 12:00 noon
Venue: Seminar Room, First Floor, School of Physical Sciences (SPS), JNU

Abstract: We will discuss general construction of a certain kind of mock theta functions, more precisely a construction that generalizes results obtained by Zwegers in his PhD thesis. After a brief discussion of their relevance in the context of physics and mathematics, we will develop a general procedure to describe them for a lattice of indefinite signature (r,n-r). We will focus on the case r=2 to understand the crucial features of this general construction and lay out a prescription of extending it to r>2 cases. The discussion will be based on joint works with Alexandrov, Manschot and Pioline. Subsequent works appeared where Kudla developed a geometric picture based on the so-called Kudla-Millson theta forms. We will touch upon the connections with our construction. If time permits, we will also briefly discuss another geometric construction developed by Westerholt-Raum, shortly following our work.

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Physics Seminar of the School of Physical Sciences
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Emergent Phase Space Description of Unitary Matrix Model

Suvankar Dutta 
Indian Institute of Science Education & Research, Bhopal

Date: April 7, 2017 (Friday)
Time: 16:00 hrs (4:00 PM)
Venue: Seminar Room, First Floor, School of Physical Sciences (SPS), JNU

Abstract: In this talk we shall first discuss a phase space description of a generic unitary matrix model and see how different phases of the theory can be characterised in terms of different (two dimensional) droplets in phase space. This droplet picture has a very strong similarity with phase space distribution for Thomas-Fermi model. It is therefore interesting to see if there exists an underlying quantum mechanical understanding of different large N phases of a unitary matrix model.

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.