Algebraic identifiability of partial differential equation models
 Byrne, H Harrington, H Ovchinnikov, A Pogudin, G Rahkooy, H Soto, P (06 Feb 2024)
Fri, 21 Feb 2025
12:00
L5

Tubings of rooted trees: resurgence and multiple insertion places

Karen Yeats
(University of Waterloo)
Abstract

I will explain about how tubings of rooted trees can solve Dyson-Schwinger equations, and then summarize the two newer results in this direction, how to incorporate distinct insertion places and how when the Mellin transform is a reciprocal of a polynomial with rational roots, then one can use combinatorial techniques to obtain a system of differential equations that is perfectly suited to resurgent analysis.

Based on arXiv:2408.15883 (with Michael Borinsky and Gerald Dunne) and arXiv:2501.12350 (with Nick Olson-Harris).

Tue, 18 Feb 2025

14:00 - 15:00
L4

Cube-root concentration of the chromatic number of $G(n,1/2)$ – sometimes

Oliver Riordan
(University of Oxford)
Abstract
A classical question in the theory of random graphs is 'how much does the chromatic number of $G(n,1/2)$ vary?' For example, roughly what is its standard deviation $\sigma_n$? An old argument of Shamir and Spencer gives an upper bound of $O(\sqrt{n})$, improved by a logarithmic factor by Alon. For general $n$, a result with Annika Heckel implies that $n^{1/2}$ is tight up to log factors. However, according to the 'zig-zag' conjecture $\sigma_n$ is expected to vary between $n^{1/4+o(1)}$ and $n^{1/2+o(1)}$ as $n$ varies. I will describe recent work with Rob Morris, building on work of Bollobás, Morris and Smith, giving an $O^*(n^{1/3})$ upper bound for certain values of $n$, the first bound beating $n^{1/2-o(1)}$, and almost matching the zig-zag conjecture for these $n$. The proof uses martingale methods, the entropy approach of Johansson, Kahn and Vu, the second moment method, and a new (we believe) way of thinking about the distribution of the independent sets in $G(n,1/2)$.
Rapidly yawing spheroids in viscous shear flow: emergent loss of symmetry
 Dalwadi, M Journal of Fluid Mechanics volume 1009 (15 Apr 2025)
Mon, 17 Feb 2025
13:00
L6

Introduction to the membrane theory of entanglement dynamics

Jiang Hanzhi
Abstract

The time evolution of quantum matter systems toward their thermal equilibria, characterized by their entanglement entropy (EE), is a question that permeates many areas of modern physics. The dynamic of EE in generic chaotic many-body systems has an effective description in terms of a minimal membrane described by its membrane tension function. For strongly coupled systems with a gravity dual, the membrane tension can be obtained by projecting the bulk Hubeny-Rangamani-Ryu-Takayanagi (HRT) surfaces to the boundary along constant infalling time. In this talk, I will introduce the membrane theory of entanglement dynamics, its generalization to 2d CFT, as well as several applications. Based on arXiv: 1803.10244 and arXiv: 2411.16542.

Manifesto: challenging the standard cosmological model.
 Binney, J Mohayaee, R Peacock, J Sarkar, S Philosophical transactions. Series A, Mathematical, physical, and engineering sciences volume 383 issue 2290 20240036 (13 Feb 2025)
A search for extremely-high-energy neutrinos and first constraints on
the ultra-high-energy cosmic-ray proton fraction with IceCube
 Collaboration, I Abbasi, R Ackermann, M Adams, J Agarwalla, S Aguilar, J Ahlers, M Alameddine, J Amin, N Andeen, K Argüelles, C Ashida, Y Athanasiadou, S Axani, S Babu, R Bai, X V, A Baricevic, M Barwick, S Bash, S Basu, V Bay, R Beatty, J Tjus, J Beise, J Bellenghi, C BenZvi, S Berley, D Bernardini, E Besson, D Blaufuss, E Bloom, L Blot, S Bontempo, F Motzkin, J Meneguolo, C Böser, S Botner, O Böttcher, J Braun, J Brinson, B Brisson-Tsavoussis, Z Brostean-Kaiser, J Brusa, L Burley, R Butterfield, D Campana, M Caracas, I Carloni, K Carpio, J Chattopadhyay, S Chau, N Chen, Z Chirkin, D Choi, S Clark, B Coleman, A Coleman, P Collin, G Connolly, A Conrad, J Corley, R Cowen, D Clercq, C DeLaunay, J Delgado, D Deng, S Desai, A Desiati, P Vries, K Wasseige, G DeYoung, T Diaz, A Díaz-Vélez, J Dierichs, P Dittmer, M Domi, A Draper, L Dujmovic, H Durnford, D Dutta, K DuVernois, M Ehrhardt, T Eidenschink, L Eimer, A Eller, P Ellinger, E Mentawi, S Elsässer, D Engel, R Erpenbeck, H Esmail, W Evans, J Evenson, P Fan, K Fang, K Farrag, K Fazely, A Fedynitch, A Feigl, N Fiedlschuster, S Finley, C Fischer, L Fox, D Franckowiak, A Fukami, S Fürst, P Gallagher, J Ganster, E Garcia, A Garcia, M Garg, G Genton, E Gerhardt, L Ghadimi, A Girard-Carillo, C Glaser, C Glüsenkamp, T Gonzalez, J Goswami, S Granados, A Grant, D Gray, S Griffin, S Griswold, S Groth, K Guevel, D Günther, C Gutjahr, P Ha, C Haack, C Hallgren, A Halve, L Halzen, F Hamacher, L Hamdaoui, H Minh, M Handt, M Hanson, K Hardin, J Harnisch, A Hatch, P Haungs, A Häußler, J Helbing, K Hellrung, J Hermannsgabner, J Heuermann, L Heyer, N Hickford, S Hidvegi, A Hill, C Hill, G Hmaid, R Hoffman, K Hori, S Hoshina, K Hostert, M Hou, W Huber, T Hultqvist, K Hünnefeld, M Hussain, R Hymon, K Ishihara, A Iwakiri, W Jacquart, M Jain, S Janik, O Jansson, M Jeong, M Jin, M Jones, B Kamp, N Kang, D Kang, W Kang, X Kappes, A Kappesser, D Kardum, L Karg, T Karl, M Karle, A Katil, A Katz, U Kauer, M Kelley, J Khanal, M Zathul, A Kheirandish, A Kiryluk, J Klein, S Kobayashi, Y Kochocki, A Koirala, R Kolanoski, H Kontrimas, T Köpke, L Kopper, C Koskinen, D Koundal, P Kowalski, M Kozynets, T Krieger, N Krishnamoorthi, J Krishnan, T Kruiswijk, K Krupczak, E Kumar, A Kun, E Kurahashi, N Lad, N Gualda, C Lamoureux, M Larson, M Lauber, F Lazar, J DeHolton, K Leszczyńska, A Liao, J Lincetto, M Liu, Y Liubarska, M Love, C Lu, L Lucarelli, F Luszczak, W Lyu, Y Madsen, J Magnus, E Mahn, K Makino, Y Manao, E Mancina, S Mand, A Sainte, W Mariş, I Marka, S Marka, Z Marsee, M Martinez-Soler, I Maruyama, R Mayhew, F McNally, F Mead, J Meagher, K Mechbal, S Medina, A Meier, M Merckx, Y Merten, L Mitchell, J Montaruli, T Moore, R Morii, Y Morse, R Moulai, M Mukherjee, T Naab, R Nakos, M Naumann, U Necker, J Negi, A Neste, L Neumann, M Niederhausen, H Nisa, M Noda, K Noell, A Novikov, A Pollmann, A O'Dell, V Olivas, A Orsoe, R Osborn, J O'Sullivan, E Palusova, V Pandya, H Park, N Parker, G Parrish, V Paudel, E Paul, L Heros, C Pernice, T Peterson, J Pizzuto, A Plum, M Pontén, A Popovych, Y Rodriguez, M Pries, B Procter-Murphy, R Przybylski, G Pyras, L Raab, C Rack-Helleis, J Rad, N Ravn, M Rawlins, K Rechav, Z Rehman, A Resconi, E Reusch, S Rhode, W Riedel, B Rifaie, A Roberts, E Robertson, S Rodan, S Rongen, M Rosted, A Rott, C Ruhe, T Ruohan, L Safa, I Saffer, J Salazar-Gallegos, D Sampathkumar, P Sandrock, A Santander, M Sarkar, S Savelberg, J Savina, P Schaile, P Schaufel, M Schieler, H Schindler, S Schlickmann, L Schlüter, B Schlüter, F Schmeisser, N Schmidt, T Schneider, J Schröder, F Schumacher, L Schwirn, S Sclafani, S Seckel, D Seen, L Seikh, M Seo, M Seunarine, S Myhr, P Shah, R Shefali, S Shimizu, N Silva, M Skrzypek, B Smithers, B Snihur, R Soedingrekso, J Søgaard, A Soldin, D Soldin, P Sommani, G Spannfellner, C Spiczak, G Spiering, C Stachurska, J Stamatikos, M Stanev, T Stezelberger, T Stürwald, T Stuttard, T Sullivan, G Taboada, I Ter-Antonyan, S Terliuk, A Thiesmeyer, M Thompson, W Thwaites, J Tilav, S Tollefson, K Tönnis, C Toscano, S Tosi, D Trettin, A Elorrieta, M Upadhyay, A Upshaw, K Vaidyanathan, A Valtonen-Mattila, N Vandenbroucke, J Eijndhoven, N Vannerom, D Santen, J Vara, J Varsi, F Veitch-Michaelis, J Venugopal, M Vereecken, M Carrasco, S Verpoest, S Veske, D Vijai, A Walck, C Wang, A Weaver, C Weigel, P Weindl, A Weldert, J Wen, A Wendt, C Werthebach, J Weyrauch, M Whitehorn, N Wiebusch, C Williams, D Witthaus, L Wolf, M Wrede, G Xu, X Yanez, J Yildizci, E Yoshida, S Young, R Yu, F Yu, S Yuan, T Zegarelli, A Zhang, S Zhang, Z Zhelnin, P Zilberman, P Zimmerman, M (04 Feb 2025) http://arxiv.org/abs/2502.01963v1
VERITAS and multiwavelength observations of the Blazar B3 2247+381 in
response to an IceCube neutrino alert
 Acharyya, A Adams, C Bangale, P Bartkoske, J Benbow, W Buckley, J Chen, Y Christiansen, J Chromey, A Duerr, A Errando, M Godoy, M Falcone, A Feng, Q Foote, J Fortson, L Furniss, A Hanlon, W Hanna, D Hervet, O Hinrichs, C Holder, J Humensky, T Jin, W Johnson, M Kaaret, P Kertzman, M Kherlakian, M Kieda, D Kleiner, T Korzoun, M Krennrich, F Kumar, S Lang, M Lundy, M McGrath, C Meyer, E Millard, M Millis, J Mooney, C Moriarty, P Mukherjee, R Ning, W O'Brien, S Ong, R Pohl, M Pueschel, E Quinn, J Rabinowitz, P Ragan, K Reynolds, P Ribeiro, D Roache, E Ryan, J Sadeh, I Sadun, A Saha, L Santander, M Sembroski, G Shang, R Splettstoesser, M Tak, D Talluri, A Tucci, J Valverde, J Williams, D Wong, S Woo, J Abbasi, R Ackermann, M Adams, J Agarwalla, S Aguilar, J Ahlers, M Alameddine, J Amin, N Andeen, K Argüelles, C Ashida, Y Athanasiadou, S Axani, S Babu, R Bai, X V, A Baricevic, M Barwick, S Bash, S Basu, V Bay, R Beatty, J Tjus, J Beise, J Bellenghi, C BenZvi, S Berley, D Bernardini, E Besson, D Blaufuss, E Bloom, L Blot, S Bontempo, F Motzkin, J Meneguolo, C Böser, S Botner, O Böttcher, J Braun, J Brinson, B Brisson-Tsavoussis, Z Brostean-Kaiser, J Brusa, L Burley, R Butterfield, D Campana, M Caracas, I Carloni, K Carpio, J Chattopadhyay, S Chau, N Chen, Z Chirkin, D Choi, S Clark, B Coleman, A Coleman, P Collin, G Connolly, A Conrad, J Corley, R Cowen, D Clercq, C DeLaunay, J Delgado, D Deng, S Desai, A Desiati, P Vries, K Wasseige, G DeYoung, T Diaz, A Díaz-Vélez, J Dierichs, P Dittmer, M Domi, A Draper, L Dujmovic, H Durnford, D Dutta, K DuVernois, M Ehrhardt, T Eidenschink, L Eimer, A Eller, P Ellinger, E Mentawi, S Elsässer, D Engel, R Erpenbeck, H Esmail, W Evans, J Evenson, P Fan, K Fang, K Farrag, K Fazely, A Fedynitch, A Feigl, N Fiedlschuster, S Finley, C Fischer, L Fox, D Franckowiak, A Fukami, S Fürst, P Gallagher, J Ganster, E Garcia, A Garcia, M Garg, G Genton, E Gerhardt, L Ghadimi, A Girard-Carillo, C Glaser, C Glüsenkamp, T Gonzalez, J Goswami, S Granados, A Grant, D Gray, S Griffin, S Griswold, S Groth, K Guevel, D Günther, C Gutjahr, P Ha, C Haack, C Hallgren, A Halve, L Halzen, F Hamacher, L Hamdaoui, H Minh, M Handt, M Hanson, K Hardin, J Harnisch, A Hatch, P Haungs, A Häußler, J Helbing, K Hellrung, J Hermannsgabner, J Heuermann, L Heyer, N Hickford, S Hidvegi, A Hill, C Hill, G Hmaid, R Hoffman, K Hori, S Hoshina, K Hostert, M Hou, W Huber, T Hultqvist, K Hünnefeld, M Hussain, R Hymon, K Ishihara, A Iwakiri, W Jacquart, M Jain, S Janik, O Jansson, M Jeong, M Jin, M Jones, B Kamp, N Kang, D Kang, W Kang, X Kappes, A Kappesser, D Kardum, L Karg, T Karl, M Karle, A Katil, A Katz, U Kauer, M Kelley, J Khanal, M Zathul, A Kheirandish, A Kiryluk, J Klein, S Kobayashi, Y Kochocki, A Koirala, R Kolanoski, H Kontrimas, T Köpke, L Kopper, C Koskinen, D Koundal, P Kowalski, M Kozynets, T Krieger, N Krishnamoorthi, J Krishnan, T Kruiswijk, K Krupczak, E Kumar, A Kun, E Kurahashi, N Lad, N Gualda, C Lamoureux, M Larson, M Lauber, F Lazar, J DeHolton, K Leszczyńska, A Liao, J Lincetto, M Liu, Y Liubarska, M Love, C Lu, L Lucarelli, F Luszczak, W Lyu, Y Madsen, J Magnus, E Mahn, K Makino, Y Manao, E Mancina, S Mand, A Sainte, W Mariş, I Marka, S Marka, Z Marsee, M Martinez-Soler, I Maruyama, R Mayhew, F McNally, F Mead, J Meagher, K Mechbal, S Medina, A Meier, M Merckx, Y Merten, L Mitchell, J Montaruli, T Moore, R Morii, Y Morse, R Moulai, M Mukherjee, T Naab, R Nakos, M Naumann, U Necker, J Negi, A Neste, L Neumann, M Niederhausen, H Nisa, M Noda, K Noell, A Novikov, A Pollmann, A O'Dell, V Olivas, A Orsoe, R Osborn, J O'Sullivan, E Palusova, V Pandya, H Park, N Parker, G Parrish, V Paudel, E Paul, L Heros, C Pernice, T Peterson, J Pizzuto, A Plum, M Pontén, A Popovych, Y Rodriguez, M Pries, B Procter-Murphy, R Przybylski, G Pyras, L Raab, C Rack-Helleis, J Rad, N Ravn, M Rawlins, K Rechav, Z Rehman, A Resconi, E Reusch, S Rhode, W Riedel, B Rifaie, A Roberts, E Robertson, S Rodan, S Rongen, M Rosted, A Rott, C Ruhe, T Ruohan, L Safa, I Saffer, J Salazar-Gallegos, D Sampathkumar, P Sandrock, A Sarkar, S Savelberg, J Savina, P Schaile, P Schaufel, M Schieler, H Schindler, S Schlickmann, L Schlüter, B Schlüter, F Schmeisser, N Schmidt, T Schneider, J Schröder, F Schumacher, L Schwirn, S Sclafani, S Seckel, D Seen, L Seikh, M Seo, M Seunarine, S Myhr, P Shah, R Shefali, S Shimizu, N Silva, M Skrzypek, B Smithers, B Snihur, R Soedingrekso, J Søgaard, A Soldin, D Soldin, P Sommani, G Spannfellner, C Spiczak, G Spiering, C Stachurska, J Stamatikos, M Stanev, T Stezelberger, T Stürwald, T Stuttard, T Sullivan, G Taboada, I Ter-Antonyan, S Terliuk, A Thiesmeyer, M Thompson, W Thwaites, J Tilav, S Tollefson, K Tönnis, C Toscano, S Tosi, D Trettin, A Elorrieta, M Upadhyay, A Upshaw, K Vaidyanathan, A Valtonen-Mattila, N Vandenbroucke, J Eijndhoven, N Vannerom, D Santen, J Vara, J Varsi, F Veitch-Michaelis, J Venugopal, M Vereecken, M Carrasco, S Verpoest, S Veske, D Vijai, A Walck, C Wang, A Weaver, C Weigel, P Weindl, A Weldert, J Wen, A Wendt, C Werthebach, J Weyrauch, M Whitehorn, N Wiebusch, C Witthaus, L Wolf, M Wrede, G Xu, X Yanez, J Yildizci, E Yoshida, S Young, R Yu, F Yu, S Yuan, T Zegarelli, A Zhang, S Zhang, Z Zhelnin, P Zilberman, P Zimmerman, M Drake, P Spira-Savett, E Lusen, P Mori, K (06 Feb 2025) http://arxiv.org/abs/2502.03853v1
Algorithmic Collusion and a Folk Theorem from Learning with Bounded Rationality
 Cartea, Á Chang, P Penalva, J Waldon, H
Nash Equilibrium between Brokers and Traders
 Cartea, Á Jaimungal, S Sánchez-Betancourt, L (15 Jul 2024)
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