Fri 01 Nov 16:00: TBA
Abstract not available
- Speaker: William Handley (Cambridge U.)
- Friday 01 November 2024, 16:00-17:00
- Venue: MR19 (Potter Room, Pavilion B), CMS.
- Series: HEP phenomenology joint Cavendish-DAMTP seminar; organiser: Terry Generet.
Wed 22 May 16:00: TBA
TBA
- Speaker: Prof Monika Schleier-Smith, Stanford University
- Wednesday 22 May 2024, 16:00-17:00
- Venue: Small Lecture Theatre, Cavendish Laboratory, J.J. Thomson Avenue.
- Series: Cavendish Quantum Colloquium; organiser: Dr Nur Unal.
Mon 20 May 15:00: Jet dynamics in topographically-forced shallow-water planetary atmospheres ADIW03 - Climate Applications of Layering
This talk examines the emergence of jets and their long-time dynamics in global spherical rotating shallow-water flows. Departing from many past studies, we apply space and time-varying (time-correlated) topographic-like forcing exclusively, and weakly damp thermally. Results are presented using Contour Advection, a numerical approach designed to have extremely weak numerical damping, and thus suitable for investigating long-time dynamics. The response to topographic forcing differs significantly from previously-considered vorticity forcing, with a much larger role played by divergent motions (imbalance). Like in previous studies, well-defined quasi-zonal jets emerge, but these jets can drift meridionally, which appears to be an effect induced by the divergent motions. Authors: David Dritschel, Richard Scott & Mahdi Jalali
ADIW03 - Climate Applications of Layering
- Speaker: David Dritschel (University of St Andrews)
- Monday 20 May 2024, 15:00-15:30
- Venue: Seminar Room 1, Newton Institute.
- Series: Isaac Newton Institute Seminar Series; organiser: nobody.
Mon 29 Apr 14:00: Can a computer judge interestingness? (NOTE UNUSUAL DAY/TIME)
Mathematics is made up of provable interesting statements about numbers, geometry and abstract structures. While proof can be precisely defined, interestingness remains mysterious, a matter of intuition. In this talk we discuss ways to implement interestingness on a computer, both in symbolic and formal terms, and using state of the art AI.
(NOTE UNUSUAL DAY/TIME)
- Speaker: Michael Douglas (Center of Mathematical Sciences and Applications, Harvard University)
- Monday 29 April 2024, 14:00-15:00
- Venue: MR15 Centre for Mathematical Sciences.
- Series: Formalisation of mathematics with interactive theorem provers ; organiser: Anand Rao Tadipatri.
Fri 26 Apr 13:35: Privacy with Synthetic Data: Applications and Developments OFBW65 - Connecting Heavy Tails and Differential Privacy in Machine Learning
OFBW65 - Connecting Heavy Tails and Differential Privacy in Machine Learning
- Speaker: Shinpei Nakamura (Yale University)
- Friday 26 April 2024, 13:35-14:15
- Venue: External.
- Series: Isaac Newton Institute Seminar Series; organiser: nobody.
Fri 31 May 16:00: Title to be confirmed
Abstract not available
- Speaker: Helen Dacre, University of Reading
- Friday 31 May 2024, 16:00-17:00
- Venue: MR2.
- Series: Fluid Mechanics (DAMTP); organiser: Professor Grae Worster.
Fri 24 May 16:00: Title to be confirmed
Abstract not available
- Speaker: Sarah Waters, University of Oxford
- Friday 24 May 2024, 16:00-17:00
- Venue: MR2.
- Series: Fluid Mechanics (DAMTP); organiser: Professor Grae Worster.
Fri 03 May 16:00: Title to be confirmed
Abstract not available
- Speaker: Jerry Westerweel, TU Delft
- Friday 03 May 2024, 16:00-17:00
- Venue: MR2.
- Series: Fluid Mechanics (DAMTP); organiser: Professor Grae Worster.
Fri 17 May 16:00: PhD students' talks
Abstract not available
- Speaker: Speakers to be confirmed
- Friday 17 May 2024, 16:00-17:00
- Venue: MR2.
- Series: Fluid Mechanics (DAMTP); organiser: Professor Grae Worster.
Thu 02 May 14:00: The entanglement membrane in exactly solvable lattice models
Entanglement membrane theory is an effective coarse-grained description of entanglement dynamics and operator growth in chaotic quantum many-body systems. The fundamental quantity characterizing the membrane is the entanglement line tension. However, determining the entanglement line tension for microscopic models is in general exponentially difficult. We compute the entanglement line tension in a recently introduced class of exactly solvable yet chaotic unitary circuits, so-called generalized dual-unitary circuits, obtaining a non-trivial form that gives rise to a hierarchy of velocity scales with $v_E DU2 circuits, the entanglement line tension can be computed entirely, while for the higher levels the solvability is reduced to certain regions in spacetime. This partial solvability nevertheless constrains the dynamics inside the inaccessible region. Finally, we discuss a general framework of constructing lattice models with solvable dynamics. Our results shed light on entanglement membrane theory in microscopic Floquet lattice models and enable us to perform non-trivial checks on the validity of its predictions by comparison to exact and numerical calculations. Moreover, they demonstrate that generalized dual-unitary circuits display a more generic form of information dynamics than dual-unitary circuits.
- Speaker: Michael Rampp, MPIPKS
- Thursday 02 May 2024, 14:00-15:00
- Venue: TCM Seminar Room.
- Series: Theory of Condensed Matter; organiser: Gaurav.
Fri 10 May 16:00: Geometry and learning of dynamical systems
Abstract not available
- Speaker: Igor Mezic, UC Santa Barbara
- Friday 10 May 2024, 16:00-17:00
- Venue: MR2.
- Series: Fluid Mechanics (DAMTP); organiser: Professor Grae Worster.
Fri 14 Jun 16:00: Entrainment across a turbulent/turbulent interface
Abstract not available
- Speaker: Oliver Buxton, Imperial College London
- Friday 14 June 2024, 16:00-17:00
- Venue: MR2.
- Series: Fluid Mechanics (DAMTP); organiser: Professor Grae Worster.
Mon 29 Apr 14:00: Title to be confirmed (NOTE UNUSUAL DAY/TIME)
Abstract not available
(NOTE UNUSUAL DAY/TIME)
- Speaker: Michael Douglas (Center of Mathematical Sciences and Applications, Harvard University)
- Monday 29 April 2024, 14:00-15:00
- Venue: MR15 Centre for Mathematical Sciences.
- Series: Formalisation of mathematics with interactive theorem provers ; organiser: Anand Rao Tadipatri.
Wed 01 May 16:00: Chirality and Topology
Chirality is a very active field of research in organic chemistry, closely linked to the concept of symmetry. Topology, a well-established concept in mathematics, has nowadays become essential to describe condensed matter [1,2]. At its core are chiral electron states on the bulk, surfaces and edges of the condensed matter systems, in which spin and momentum of the electrons are locked parallel or anti-parallel to each other. Magnetic and non-magnetic Weyl semimetals, for example, exhibit chiral bulk states that have enabled the realization of predictions from high energy and astrophysics involving the chiral quantum number, such as the chiral anomaly, the mixed axial-gravitational anomaly and axions [3-5]. Chiral topological crystals exhibit excellent chiral surface states [6,7] and different orbital angular momentum for the enantiomers, which can be advantageous in catalysis. The potential for connecting chirality as a quantum number to other chiral phenomena across different areas of science, including the asymmetry of matter and antimatter and the homochirality of life, brings topological materials to the fore [8].
References:
[1] M. G. Vergniory, B. J. Wieder, L. Elcoro, S. S. P. Parkin, C. Felser, B. A. Bernevig, N. Regnault, Science 2022, 376, 6595.
[2] P. Narang, C. A. C. Gracia and C. Felser, Nat. Mater. 2021, 20, 293.
[3] J. Gooth et al., Nature 2017, 547, 324.
[4] J. Gooth et al., Nature 2019, 575, 315.
[5] D. M. Nenno, et al., Nat Rev Phys 2022, 2, 682.
[6] B. Bradlyn, J. Cano, Z. Wang, M. G. Vergniory, C. Felser, R. J. Cava and B. A. Bernevig, Science 2016, 353, aaf5037.
[7] N. B. M Schröter, et al., Science 2020, 369, 179.
[8] C. Felser, J. Gooth, preprint arXiv:2205.05809.
- Speaker: Claudia Felser, Max Planck Institute for Chemical Physics of Solids
- Wednesday 01 May 2024, 16:00-17:00
- Venue: Small Lecture Theatre, Cavendish Laboratory, J.J. Thomson Avenue.
- Series: Cavendish Quantum Colloquium; organiser: Dr Nur Unal.
Fri 26 Apr 13:00: Uniqueness of extremal black holes in de Sitter
Uniqueness theorems for black holes with a cosmological constant are only known in a few limited cases. In my talk I present a recent uniqueness theorem for the extremal Schwarzschild-de Sitter black hole within the class of analytic vacuum spacetimes with a positive cosmological constant containing a static extremal Killing horizon. The proof is based on establishing the uniqueness of transverse deformations to the near-horizon geometry at each order in the transverse parameter. I also present a generalisation to charged extremal black holes in de Sitter and discuss the analogous problem in the case of negative cosmological constant. The talk is based on 2309.04238 [gr-qc] and 2403.08467 [gr-qc].
- Speaker: Dávid Katona, The University of Edinburgh
- Friday 26 April 2024, 13:00-14:00
- Venue: Potter room/Zoom.
- Series: DAMTP Friday GR Seminar; organiser: Xi Tong.
Mon 20 May 12:00: Arctic Transitions: The Beaufort Gyre’s Diffusive Staircase ADIW03 - Climate Applications of Layering
Diffusive staircases in the Arctic Ocean are structures that consist of mixed layers separated by thin interfaces in temperature and salinity. These staircases are prevalent in the Arctic and can occur when warm and salty water underlies cooler, fresher water. In this talk, I will focus on staircases in a particular region of the western Arctic Ocean, known as the Beaufort Gyre. Staircase layer thicknesses exhibit distinct differences across the Gyre, with a jump from thinner layers in the western Gyre to thicker layers on the eastern side. We will discuss how this sharp transition may be linked to a warm water influx into the Gyre and subsequent propagation across the region. The results may be of interest for interpreting how staircases may change under Arctic warming.
ADIW03 - Climate Applications of Layering
- Speaker: Nicole Shibley (Princeton University)
- Monday 20 May 2024, 12:00-12:30
- Venue: Seminar Room 1, Newton Institute.
- Series: Isaac Newton Institute Seminar Series; organiser: nobody.
Thu 23 May 15:00: How Dirty Icebergs Melt ADIW03 - Climate Applications of Layering
ADIW03 - Climate Applications of Layering
- Speaker: Claudia Cenedese (Woods Hole Oceanographic Institution)
- Thursday 23 May 2024, 15:00-15:30
- Venue: Seminar Room 1, Newton Institute.
- Series: Isaac Newton Institute Seminar Series; organiser: nobody.
Thu 23 May 12:00: Understanding double diffusive turbulence using quasilinear approximations and logarithmic lattices ADIW03 - Climate Applications of Layering
ADIW03 - Climate Applications of Layering
- Speaker: Steven Tobias (University of Leeds)
- Thursday 23 May 2024, 12:00-12:30
- Venue: Seminar Room 1, Newton Institute.
- Series: Isaac Newton Institute Seminar Series; organiser: nobody.
Thu 23 May 10:00: Links Between Eddy Horizontal and Vertical Structure: A Geostrophic Turbulence Interpretation ADIW03 - Climate Applications of Layering
ADIW03 - Climate Applications of Layering
- Speaker: Elizabeth Yankovsky (New York University)
- Thursday 23 May 2024, 10:00-11:00
- Venue: Seminar Room 1, Newton Institute.
- Series: Isaac Newton Institute Seminar Series; organiser: nobody.
Wed 22 May 12:00: Tidal dissipation in stably stratified and layered regions of rotating giant planets ADIW03 - Climate Applications of Layering
ADIW03 - Climate Applications of Layering
- Speaker: Adrian Barker (University of Leeds)
- Wednesday 22 May 2024, 12:00-12:30
- Venue: Seminar Room 1, Newton Institute.
- Series: Isaac Newton Institute Seminar Series; organiser: nobody.