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Today's Seminar
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12-02-25
Physics Seminar
Date: Wednesday, 12 February 2025
Time: 1.45 PM
Venue: Lecture Hall 2
Thermodynamics of topological Dyonic hairy black holes and interplay of QNMs at the phase transition
Supragyan Priyadarshinee
IISER, Mohali. Abstract We present and discuss a new family of topological hairy dyonic black
hole solutions in asymptotically anti–de Sitter space. The coupled
Einstein-Maxwell-scalar gravity system, that carries both the electric
and magnetic charges is solved, and exact hairy dyonic black hole
solutions are obtained analytically. The scalar field profiles that
give rise to such black hole solutions are regular everywhere. The
hairy solutions are obtained for planar, spherical, and hyperbolic
horizon topologies. In addition, analytic expressions of regularized
action, stress tensor, conserved charges, and free energies are
obtained. We further comment on different prescriptions for computing
the black hole mass with hairy backgrounds. We analyze the
thermodynamics of these hairy dyonic black holes in canonical and
grand canonical ensembles, and we find that both electric and magnetic
charges have a constructive effect on the stability of the hairy
solution. For the case of planar and hyperbolic horizons, we find
thermodynamically stable hairy black holes that are favored at low
temperatures compared to the nonhairy counterparts. We further find
that, for a spherical hairy dyonic black hole, the thermodynamic phase
diagram resembles to that of a Van der Waals fluid not only in
canonical but also in the grand canonical ensemble. Then, we explore
the dynamics of the massless scalar field in the context of hairy
black holes at the phase transition, utilizing both the series
solution and shooting methods, we numerically compute the
corresponding quasinormal modes (QNMs) across various black hole
parameters. Notably, the values obtained from these two methods
exhibit robust agreement. The consistently negative imaginary part of
the QNM underscores the stability of the massless scalar field in the
backdrop of the black hole. Our investigation reveals that both the
decay and oscillatory modes of the scalar field perturbation exhibit a
linear increase with the horizon radius, particularly notable for
large black holes. We conduct a comprehensive analysis of QNMs across
diverse black hole parameters, encompassing the electric charge,
magnetic charge, horizon radius, and the hairy parameter. Moreover, we
extend our scrutiny to the QNM behaviour near the small/large black
hole phase transition. Intriguingly, we discern distinct
characteristics in the nature of QNMs between the large and small
black hole phases, indicating the potential of QNMs as a probing tool
for black hole phase transitions.
Today's Seminar
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12-02-25
Seminar Announcement
Date: Wednesday, 12 February 2025
Time: 3:30 PM
Venue: Seminar Hall
Mathematics in Industrial Machinery at TRUMPF Metamation
Wadehn Wolf
CEO TRUMPF Metamation. Abstract - Technology steps of TRUMPF
- Overview on sheet metal machines
- Mathematical production and optimization problems in:
- Laser cutting: From a sheet to the part
- Bending: From a 3D geometry to a bend sequence
- Production: Intralogistics
- Control of Robots and cartesian machines
- Student challenge (Nesting)
Forthcoming Seminars
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14-02-25
Data Science Seminar
Date: Friday, 14 February 2025
Time: 2:00 - 3:00 PM
Venue: NKN Hall
Subdata selection: Introduction and Recent Works(Abstract)
Rakhi Singh
IIT Madras.
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14-02-25
Seminar Announcement
Date: Friday, 14 February 2025
Time: 3:30 PM
Venue: Seminar Hall
Modular Descriptions of Regular Functions(Abstract)
Paul Gastin
LMF, ENS Paris-Saclay, France.
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18-02-25
Seminar Announcement
Date: Tuesday, 18 February 2025
Time: 2:00 PM
Venue: Seminar Hall
Root Clusters(Abstract)
Shubham Jaiswal
IISER Pune.
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20-02-25
Mathematics Seminar
Date: Thursday, 20 February 2025
Time: 3:30 to 4:30 PM
Venue: Seminar Hall
A density function for the epsilon multiplicity and applications to integral closures(Abstract)
Suprajo Das
IIT Madras.
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24-02-25
R.K. Rubugunday Distinguished Lecture
Date: Monday, 24 February 2025
Time: 2:00 - 3:00 PM
Venue: Seminar Hall
Sustainability - Data, Models and Pedagogy(Abstract)
Milind Sohoni
Computer Science Dept, IIT Bombay and CTARA IIT Bombay.
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24-02-25
K. Lakshmanan Memorial Distinguished Lecture
Date: Monday, 24 February 2025
Time: 3:30 PM
Venue: Seminar Hall
Title: TBA(Abstract)
Shiraz Minwalla
TIFR Mumbai.
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26-02-25
Seminar Announcement
Date: Wednesday, 26 February 2025
Time: 3:30 PM
Venue: Seminar Hall
Vector bundles in tropical geometry: An elementary approach(Abstract)
Martin Ulirsch
Goethe University, Frankfurt.
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28-02-25
Chennai Combinatorics Colloquium Series
Date: Friday, 28 February 2025
Time: 3:30 PM
Venue: Seminar Hall
A walk through the history and present of Perfect Matchings(Abstract)
Nishad Kothari
IIT Madras.
Past Seminars (this year)
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10-02-25
Computer Science Seminar
Speaker: K S Thejaswini, Institute of Science and Technology, Austria
Date: Monday, 10 February 2025
Time: 10.30 AM
Venue: Seminar Hall
Resolving nondeterminism with randomness(Abstract)
K S Thejaswini
Institute of Science and Technology, Austria.
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05-02-25
Seminar Announcement
Date: Wednesday, 5 February 2025
Time: 3:30 PM
Venue: Seminar Hall
Recent developments in numerical invariants in prime characteristic commutative algebra(Abstract)
Alapan Mukhopadhyay
Ecole Polytechnique Federale de Lausanne (EPFL).
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05-02-25
Mathematics Colloquium
Date: Wednesday, 5 February 2025
Time: 2.00 PM
Venue: Seminar Hall, CMI
Special points on moduli spaces(Abstract)
Ananth Shankar
Northwestern University.
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05-02-25
Physics Seminar
Date: Wednesday, 5 February 2024
Time: 1.45 PM
Venue: Lecture Hall 2
QCD-Gravity double-copy in the Regge regime via shockwave collisions(Abstract)
Himanshu Raj
Stony Brook University, USA.
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04-02-25
Computer Science Seminar
Speaker: Sreejith A. V., IIT Goa
Date: Tuesday, 4 February 2025
Time: 3.45 - 4.45 PM
Venue: Seminar Hall
Active learning of one counter automata(Abstract)
Sreejith A. V.
IIT Goa.
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04-02-25
Physics Seminar
Date: Tuesday, 04 February 2025
Time: 1.45 PM
Venue: Lecture Hall 2
Fundamental strings, gravity and quantum processors(Abstract)
Ayan Mukhopadhyay
Instituto de Física, Pontificia Universidad Católica de Valparaíso.
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29-01-25
Physics Seminar
Date: Wednesday, 29 January 2025
Time: 1.45 PM
Venue: Lecture Hall 2
Supertranslations at Spatial and Timelike Infinities in the First-Order Formalism(Abstract)
Divyesh Solanki
IIIT Allahabad.
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28-01-25
Physics Seminar
Date: Tuesday, 28 January 2025
Time: 1:45 PM
Venue: Lecture Hall 2
An equivalence of three butterflies in Lifshitz background(Abstract)
Banashree Baishya
IIT Guwahati.
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24-01-25
Physics Seminar
Date: Friday, 24 January 2025
Time: 3:45 PM
Venue: Lecture Hall 2
A classical dimer model with a discrete-scale-invariant fixed point(Abstract)
Sounak Biswas
Universität Würzburg, Germany.
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24-01-25
Computer Science Seminar
Speaker: S. Arun Kumar, GITAM University
Date: Friday, 24 January 2025
Time: 2:00 PM
Venue: Seminar Hall
Extending Process Algebra with an undefined action(Abstract)
S. Arun Kumar
GITAM University.
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24-01-25
Physics Seminar
Date: Friday, 24 January 2025
Time: 1:45 PM
Venue: Lecture Hall 3
New Insights into Strong Gravity from Accreting Supermassive Black Holes(Abstract)
Prashant Kocherlakota
Harvard University.
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23-01-25
Physics Seminar
Date: Thursday, 23 January 2024
Time: 1.45 to 3 PM
Venue: Lecture Hall 2
Simplicity of In-In correlators(Abstract)
Chandramouli Chowdhury
University of Southampton.
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22-01-25
Computer Science Seminar
Date: Wednesday, 22 January 2025
Time: 2 to 3 PM
Venue: Seminar Hall
Characterizing and Testing Principal Minor Equivalence of Matrices(Abstract)
Sumanta Ghosh
ISI Kolkata.
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22-01-25
Seminar Announcement
Date: Wednesday, 22 January 2025
Time: 3:30 PM
Venue: Seminar Hall
Doing Morse theory without Smale condition(Abstract)
Ipsita Datta
ETH Zuerich.
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21-01-25
Mathematics Seminar
Date: Tuesday, 21 January 2025
Time: 3:30 PM
Venue: Seminar Hall
Effective and minimal cones of weights for Hilbert modular forms (joint with P. Kassaei)(Abstract)
Fred Diamond
King's College, London.
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21-01-25
Physics Seminar
Date: Tuesday, 21 January 2025
Time: 1:45 PM
Venue: Lecture Hall 2
Discovering Extraordinary Black Hole Mergers and their Origin(Abstract)
Gayathri V
University of Wisconsin-Milwaukee.
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21-01-25
Public viva-voce Notification
Date: Tuesday, 21 January 2025
Time: 11:00 AM
Venue: Seminar Hall
Two Topics in Enumerative Combinatorics(Abstract)
Krishna Menon P
Chennai Mathematical Institute.
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21-01-25
Seminar Announcement
Date: Tuesday, 21 January 2025
Time: 10.45 - 11.45 AM
Venue: Lecture Hall 1
Parsimonious Guarding(Abstract)
Prahlad Narasimhan Kasthurirangan
PhD student at Stony Brook University.
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20-01-25
Seminar Announcement
Date: Monday, 20 January 2025
Time: 3:30 PM
Venue: Seminar Hall
Congruences and integral periods for GL3 over imaginary quadratic fields(Abstract)
Baskar Balasubramanyam
IISER Pune.
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17-01-25
Data Science Seminar
Speaker: Varun Ramanathan, Indexnine Technologies
Date: Friday, 17 January 2025
Time: 2:00 PM
Venue: NKN Hall
Ventures in AI: An Indexnine Journey(Abstract)
Varun Ramanathan
Indexnine Technologies.
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16-01-25
Seminar Announcement
Date: Thursday, 16 January 2025
Time: 10:45 AM
Venue: Seminar Hall
Order-finding for Structured ABPs(Abstract)
Anamay Tengse
NISER Bhubaneswar.
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10-01-25
Physics Seminar
Date: Friday, 10 January 2025
Time: 3:45 PM
Venue: Lecture Hall 3
Soft edges: the many links between soft and edge modes [Part-II]
Bilyana Tomova
Okinawa Institute of Science and Technology.
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08-01-25
Physics Seminar
Date: Wednesday, 8 January 2025
Time: 3:45 PM
Venue: Lecture Hall 3
Soft edges: the many links between soft and edge modes [Part-I]
Gonçalo Araujo-Regado
Okinawa Institute of Science and Technology.
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08-01-25
Mathematics Seminar
Date: Wednesday, 8 January 2025
Time: 3:30 PM
Venue: Seminar Hall
Non-maximal Toledo components(Abstract)
Oscar Garcia-Prada
ICMAT, Madrid.
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08-01-25
Mathematics Seminar
Date: Wednesday, 8 January 2025
Time: 2:00 PM
Venue: Seminar Hall
Twisted triple product p-adic L-function for finite slope families and a p-adic Gross-Zagier formula(Abstract)
Ananyo Kazi
UniDistance Suisse.
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07-01-25
Data Science Seminar
Date: Tuesday, 7 January 2025
Time: 3:30 PM
Venue: Seminar Hall
IoT Data Analysis: Learning and Anomaly Detection(Abstract)
Nalini Ravishanker
Department of Statistics, University of Connecticut, Storrs, CT, USA.
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07-01-25
Seminar Announcement
Date: Tuesday, 7 January 2025
Time: 10:30 AM
Venue: Seminar Hall
SELP: A framework for implementing the perception-action loop in an AI agent(Abstract)
Bonny Banerjee
University of Memphis and the Institute for Intelligent Systems.
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06-01-25
Computer Science Seminar
Date: Monday, 6 January 2025
Time: 3:45 PM
Venue: Seminar Hall, CMI
Differential geometry for solving 3D computer vision problems(Abstract)
Shaifali Parashar
LIRIS, INSA-Lyon, France.
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06-01-25
Short Course on State-Space Models (Machine Learning)
Date: Monday, 6 January 2025
Time: 11.45 AM to 1.00 PM and 2.00 to 3.15 PM (2 lectures)
Venue: Seminar Hall
Title: A Tutorial on Mamba(Abstract)
Ratish Surendran Puduppully
NLP group at IT University, Copenhagen.
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07-01-25
Seminar Announcement
Date: Tuesday, 7 January 2025
Time: 03:30 PM
Venue: LH3
Fast list-decoding of univariate multiplicity and Folded Reed-Solomon codes(Abstract)
Rohan Goyal
Massachusetts Institute of Technology, USA.
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03-01-25
Physics Seminar
Date: Friday, 3 January 2025
Time: 03:30 PM
Venue: LH1
An Exterior Field Theory for Hawking Radiation
Godwin Martin
International Center for Theoretical Sciences (ICTS).
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03-01-25
Physics Seminar
Date: Friday, 3 January 2025
Time: 11.30 AM
Venue: LH1
Proper Time to Singularity and Thermal correlators
Kaustubh Singhi
International Center for Theoretical Sciences (ICTS).
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