Wed 25 Mar 13:30: Title tbc
Abstract not available
- Speaker: Harald Helfgott (CNRS--Jussieu)
- Wednesday 25 March 2026, 13:30-14:30
- Venue: MR2, CMS.
- Series: Discrete Analysis Seminar; organiser: Julia Wolf.
Wed 18 Mar 13:30: Title tbc
Abstract not available
- Speaker: Florian Richter (EPFL)
- Wednesday 18 March 2026, 13:30-14:30
- Venue: MR2, CMS.
- Series: Discrete Analysis Seminar; organiser: Julia Wolf.
Wed 11 Feb 13:30: Title tbc
Abstract not available
- Speaker: Adam Harper (University of Warwick)
- Wednesday 11 February 2026, 13:30-14:30
- Venue: MR2, CMS.
- Series: Discrete Analysis Seminar; organiser: Julia Wolf.
Wed 11 Mar 15:00: Title to be confirmed
Abstract not available
- Speaker: Manon Revel (Google DeepMind)
- Wednesday 11 March 2026, 15:00-16:00
- Venue: Online.
- Series: Social Psychology Seminar Series (SPSS); organiser: Yara Kyrychenko.
Wed 04 Mar 15:00: Title to be confirmed
Abstract not available
- Speaker: Kobi Hackenburg (University of Oxford; UK AISI)
- Wednesday 04 March 2026, 15:00-16:00
- Venue: Ground Floor Lecture Theatre, Department of Psychology, Downing Site, Cambridge.
- Series: Social Psychology Seminar Series (SPSS); organiser: Yara Kyrychenko.
Wed 17 Dec 14:00: Modulation of the North Atlantic Carbon Sink in a Warming World (Yohei Takano)) if you wish to attend and are external to BAS please let the organisers know ahead of time so they can let you in at reception
The North Atlantic is one of the most effective regions of the global ocean for atmospheric carbon uptake and long-term carbon storage. Understanding the mechanisms of carbon uptake and storage in the North Atlantic under a changing climate is crucial for studying the global carbon cycle. In this talk, I will present recent modelling studies investigating the drivers of changes in the North Atlantic carbon sink, conducted as part of the C-Streams project (https://c-streams.uk/). The first part of the presentation will introduce the project and the development of a model framework based on Estimating the Circulation and Climate of the Ocean version 4 release 2 (ECCOv4r2), coupled to an ocean biogeochemistry model (ECCOv4r2-DIC). The second part will present recent results from a suite of sensitivity experiments, highlighting the roles of rising atmospheric CO2 and warming using idealised 1% per year CO2 increase experiments with ECC Ov4r2-DIC. I will discuss both the direct effects of increasing atmospheric CO2 and ocean warming, and the indirect effects arising from warming-induced modifications to ocean circulation and transport, with a focus on the Gulf Stream and the subpolar North Atlantic. The idealised experiments show that the increase in atmospheric CO2 is the dominant driver of enhanced carbon uptake along the Gulf Stream and in the subpolar North Atlantic. However, the spatial pattern of warming can modulate carbon uptake in the subpolar region, reflecting both local and remote impacts of warming on ocean transport and mixing.
if you wish to attend and are external to BAS please let the organisers know ahead of time so they can let you in at reception
- Speaker: Yohei Takano - British Antarctic Survey
- Wednesday 17 December 2025, 14:00-15:00
- Venue: BAS Seminar Room 1.
- Series: British Antarctic Survey - Polar Oceans seminar series; organiser: Katherine Turner.
Fri 12 Dec 15:15: First-principles open quantum dynamics based on a density-matrix formalism for spin-optotronic properties in solids
Reliable prediction of materials’ quantum properties driven out of equilibrium is critical in various fields from semiconductor spintronics, energy conversion, continuous and discrete quantum information science and technology.
Here we will introduce our recently developed real-time first-principles density-matrix dynamics (FPDMD) method for open quantum systems in solids [1]. We derive this theory based on the time evolution of the electronic density matrices capable of treating electron-environment interactions and electron-electron correlations at the same level of description. The effect of the environment is separated into a coherent contribution, like the coupling to applied external electro-magnetic fields and polaronic interactions, and an incoherent contribution, like the interaction with lattice vibrations, which leads to relaxation and decoherence. Electron-electron interaction is formally derived using the nonequilibrium Green’s function plus generalized Kadanoff-Baym ansatz. The obtained non-Markovian coupled set of equations reduces to ordinary Lindblad quantum master equation form in the Markovian limit [1,2].
We show this first-principles framework enables us to make reliable prediction of quantum observables and quasiparticle dynamics in- and out- of equilibrium for both coherent and incoherent processes. As examples, we show our accurate predictions of relaxation and decoherence time of spin of electron carriers in solids [3-5], dynamics of excitons [6] and magnons, nonlinear photocurrents (photogalvanic effects) generated from electron-phonon scatterings.
At the end we show we further extend this framework with Wigner functions for simulating spatial-temporal quantum dynamics and transport accounting for a range of quantum degrees of freedom. We show accurate spin diffusion length prediction of graphene/hBN at room temperature including electron-phonon couplings [7]. And spatial-temporal quantum transport simulations that explain how chiral materials being a dynamical spin polarizer that generates spin without external magnetic field or intrinsic magnetization [8].
References:
[1] “First-principles open quantum dynamics for solids based on density-matrix formalism”, J. Simoni, G. Riva, and Y. Ping, J. Chem. Phys, 163, 170901 (2025)
[2] “Ab initio ultrafast spin dynamics in solids”, J. Xu, A. Habib, F. Wu, R. Sundararaman and Y. Ping, Phys. Rev. B, 104,184418 (2021)
[3] “Spin-phonon relaxation from a universal ab initio density-matrix approach”, J. Xu, A. Habib, S. Kumar, F.Wu, R. Sundararaman, and Y. Ping Nat. Commun., 11, 2780, (2020)
[4] “Ab-initio Predictions of Spin Relaxation, Dephasing and Diffusion in Solids”, J. Xu and Y. Ping, J. Chem.Theory Comput., 20, 492, (2023)
[5] “How Spin Relaxes and Dephases in Bulk Halide Perovskites”, J. Xu, K. Li, U. Huynh, J. Huang, R.Sundararaman, V. Vardeny, and Y. Ping, Nat. Commun., 15, 188, (2024)
[6] “Phonon-Assisted Radiative Lifetimes and Exciton Dynamics from First Principles”, C. Guo, G. Riva, J. Xu, J. Simoni, Y. Ping, Phys. Rev. B (Letters), 112, L161111 , (2025).
[7] “Spatio-temporal spin transport from first principles“, M. Fadel, J. Quinton, M. Chandra, M. Gupta, Y. Ping∗, and R. Sundararaman*, submitted, (2025) https://www.arxiv.org/pdf/2505.07745
[8] “The role of orbital polarization and spin-dependent electron-phonon scatterings in chiral-induced spin selectivity“, M. Gupta, A. Grieder, M. Fadel, J. Simoni, J. Yu, R. Sundararaman, and Y. Ping, submitted, (2025), https://arxiv.org/abs/2508.03886
- Speaker: Yuan PING (University of Wisconsin - Madison)
- Friday 12 December 2025, 15:15-16:30
- Venue: Seminar Room 3, RDC..
- Series: Theory of Condensed Matter; organiser: Bo Peng.
Thu 12 Mar 16:00: Professor Salim Khakoo, Professor of Hepatology, Southampton University
Host Prof Francesco Colucci, School of Clinical Medicine, Cambridge University
- Speaker: Professor Salim Khakoo, Professor of Hepatology, Southampton University
- Thursday 12 March 2026, 16:00-17:00
- Venue: Lecture Theatre, Jeffrey Cheah Biomedical Centre, Cambridge Biomedical Campus.
- Series: Cambridge Immunology Network Seminar Series; organiser: Liat Churley.
Thu 16 Apr 16:00: Roser Vento-Tormo, Group leader, Sanger Institute
This Cambridge Immunology Network Seminar will take place on Thursday 16 April 2026, starting at 4:00pm, in the Ground Floor Lecture Theatre, Jeffrey Cheah Biomedical Centre (JCBC)
Speaker: Roser Vento-Tormo, Group leader in Cellular Genomics, Sanger Institute, Cambridge
Title: To be confirmed
Host: Dr Virginia Pedicord, CITIID , Cambridge
Refreshments will be available following the seminar.
- Speaker: Roser Vento-Tormo, Group leader, Sanger Institute, Cambridge
- Thursday 16 April 2026, 16:00-17:00
- Venue: Lecture Theatre, Jeffrey Cheah Biomedical Centre, Cambridge Biomedical Campus.
- Series: Cambridge Immunology Network Seminar Series; organiser: Liat Churley.
Fri 17 Jul 13:00: Title to be confirmed
Abstract Bio
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- Speaker: Speaker to be confirmed
- Friday 17 July 2026, 13:00-14:00
- Venue: Room GS15 at the William Gates Building and on Zoom: https://cl-cam-ac-uk.zoom.us/j/4361570789?pwd=Nkl2T3ZLaTZwRm05bzRTOUUxY3Q4QT09&from=addon .
- Series: Energy and Environment Group, Department of CST; organiser: lyr24.
Fri 10 Jul 13:00: Title to be confirmed
Abstract Bio
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- Speaker: Speaker to be confirmed
- Friday 10 July 2026, 13:00-14:00
- Venue: Room GS15 at the William Gates Building and on Zoom: https://cl-cam-ac-uk.zoom.us/j/4361570789?pwd=Nkl2T3ZLaTZwRm05bzRTOUUxY3Q4QT09&from=addon .
- Series: Energy and Environment Group, Department of CST; organiser: lyr24.
Fri 03 Jul 13:00: Title to be confirmed
Abstract Bio
Stay Tuned!
- Speaker: Speaker to be confirmed
- Friday 03 July 2026, 13:00-14:00
- Venue: Room GS15 at the William Gates Building and on Zoom: https://cl-cam-ac-uk.zoom.us/j/4361570789?pwd=Nkl2T3ZLaTZwRm05bzRTOUUxY3Q4QT09&from=addon .
- Series: Energy and Environment Group, Department of CST; organiser: lyr24.
Fri 26 Jun 13:00: Title to be confirmed
Abstract Bio
Stay Tuned!
- Speaker: Speaker to be confirmed
- Friday 26 June 2026, 13:00-14:00
- Venue: Room GS15 at the William Gates Building and on Zoom: https://cl-cam-ac-uk.zoom.us/j/4361570789?pwd=Nkl2T3ZLaTZwRm05bzRTOUUxY3Q4QT09&from=addon .
- Series: Energy and Environment Group, Department of CST; organiser: lyr24.
Fri 19 Jun 13:00: Title to be confirmed
Abstract Bio
Stay Tuned!
- Speaker: Speaker to be confirmed
- Friday 19 June 2026, 13:00-14:00
- Venue: Room GS15 at the William Gates Building and on Zoom: https://cl-cam-ac-uk.zoom.us/j/4361570789?pwd=Nkl2T3ZLaTZwRm05bzRTOUUxY3Q4QT09&from=addon .
- Series: Energy and Environment Group, Department of CST; organiser: lyr24.
Fri 12 Jun 13:00: Title to be confirmed
Abstract Bio
Stay Tuned!
- Speaker: Speaker to be confirmed
- Friday 12 June 2026, 13:00-14:00
- Venue: Room GS15 at the William Gates Building and on Zoom: https://cl-cam-ac-uk.zoom.us/j/4361570789?pwd=Nkl2T3ZLaTZwRm05bzRTOUUxY3Q4QT09&from=addon .
- Series: Energy and Environment Group, Department of CST; organiser: lyr24.
Fri 05 Jun 13:00: Title to be confirmed
Abstract Bio
Stay Tuned!
- Speaker: Speaker to be confirmed
- Friday 05 June 2026, 13:00-14:00
- Venue: Room GS15 at the William Gates Building and on Zoom: https://cl-cam-ac-uk.zoom.us/j/4361570789?pwd=Nkl2T3ZLaTZwRm05bzRTOUUxY3Q4QT09&from=addon .
- Series: Energy and Environment Group, Department of CST; organiser: .
Fri 29 May 13:00: Title to be confirmed
Abstract Bio
Stay Tuned!
- Speaker: Speaker to be confirmed
- Friday 29 May 2026, 13:00-14:00
- Venue: Room GS15 at the William Gates Building and on Zoom: https://cl-cam-ac-uk.zoom.us/j/4361570789?pwd=Nkl2T3ZLaTZwRm05bzRTOUUxY3Q4QT09&from=addon .
- Series: Energy and Environment Group, Department of CST; organiser: lyr24.
Fri 22 May 13:00: Title to be confirmed
Abstract Bio
Stay Tuned!
- Speaker: Speaker to be confirmed
- Friday 22 May 2026, 13:00-14:00
- Venue: Room GS15 at the William Gates Building and on Zoom: https://cl-cam-ac-uk.zoom.us/j/4361570789?pwd=Nkl2T3ZLaTZwRm05bzRTOUUxY3Q4QT09&from=addon .
- Series: Energy and Environment Group, Department of CST; organiser: lyr24.
Fri 15 May 13:00: Title to be confirmed
Abstract Bio
Stay Tuned!
- Speaker: Speaker to be confirmed
- Friday 15 May 2026, 13:00-14:00
- Venue: Room GS15 at the William Gates Building and on Zoom: https://cl-cam-ac-uk.zoom.us/j/4361570789?pwd=Nkl2T3ZLaTZwRm05bzRTOUUxY3Q4QT09&from=addon .
- Series: Energy and Environment Group, Department of CST; organiser: lyr24.
Fri 08 May 13:00: Title to be confirmed
Abstract Bio
Stay Tuned!
- Speaker: Speaker to be confirmed
- Friday 08 May 2026, 13:00-14:00
- Venue: Room GS15 at the William Gates Building and on Zoom: https://cl-cam-ac-uk.zoom.us/j/4361570789?pwd=Nkl2T3ZLaTZwRm05bzRTOUUxY3Q4QT09&from=addon .
- Series: Energy and Environment Group, Department of CST; organiser: lyr24.