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Tuesday, October 20, 2026

Seminars Digest, Vol 89, Issue 5

Send Seminars mailing list submissions to seminars@itp.ac.ru To subscribe or unsubscribe via the World Wide Web, visit https://mailman.itp.ac.ru/mailman/listinfo/seminars or, via email, send a message with subject or body 'help' to seminars-request@itp.ac.ru You can reach the person managing the list at seminars-owner@itp.ac.ru When replying, please edit your Subject line so it is more specific than "Re: Contents of Seminars digest..." Today's Topics: 1. Friday 23.10.2026 (info+seminars@itp.ac.ru) 2. Thursday 22.10.2026 - ITP/CAS Colloquium (info+seminars@itp.ac.ru) ---------------------------------------------------------------------- Message: 1 Date: Tue, 20 Oct 2026 07:02:01 +0000 From: info+seminars@itp.ac.ru To: staff@itp.ac.ru, students@itp.ac.ru, seminars@itp.ac.ru Subject: [Landau ITP Seminars] Friday 23.10.2026 Message-ID: <F9oHfL24TCObI5gM6H6iFGnG5RDsvLgSYbwIIQny3k@wwwserv2> Content-Type: text/plain; charset=UTF-8 Уважаемые коллеги! На заседании Ученого совета ИТФ в пятницу 23.10 будет заслушан 1 доклад: 11:30 Sergey Nazarenko Wave-kinetics for the KP1 and its amazing properties In a 2009 paper "Turbulence in Integrable Systems", Zakharov discussed weakly integrable systems which have an infinite, but not sufficient for the full integrability, number of invariants. An example is KP1 for which Zakharov wrote a kinetic equation describing wave turbulence, and which has an infinite number of invariants and thermodynamic equilibria. In the present talk, I will report on numerical simulations of this kinetic equation, in particular, a kinetic instability of a wavepacket, and relaxation to equilibrium characterised by a condensation into low-frequency waves. ID и пароль онлайн-трансляций в Zoom те же, что и для предыдущих трансляций семинаров и докладов на Ученом совете: https://zoom.us/j/96899364518?pwd=MzBsR2lYT0lYL2x2b1oyNU9LeWlWUT09 Meeting ID: 968 9936 4518 Пароль: 250319 ------------------------------ Message: 2 Date: Tue, 20 Oct 2026 07:02:01 +0000 From: info+seminars@itp.ac.ru To: staff@itp.ac.ru, students@itp.ac.ru, seminars@itp.ac.ru Subject: [Landau ITP Seminars] Thursday 22.10.2026 - ITP/CAS Colloquium Message-ID: <18YUipZG56vyb3FDwFLFJqKOaVwn7UoxrrjZpa6I74@wwwserv2> Content-Type: text/plain; charset=UTF-8 Уважаемые коллеги! На онлайн коллоквиум по теоретической физике в четверг 22.10 будут заслушаны 2 доклада: 1) 10:00:00 по московскому времени: Pavel Grigoriev (L. D. Landau Institute for Theoretical Physics, RAS) Interplay of Superconductivity and Charge/Spin Density Wave with Imperfect Nesting The interplay between superconductivity (SC) and charge or spin density wave (DW) appears in various strongly-correlated electron systems, including most high-Tc superconductors. Often these two phenomena coexist. The spatially uniform DW-SC coexistence may appear in the case of imperfect nesting of Fermi-surface (FS). Then the DW opens a gap in electron spectrum only on some FS parts. One could expect the exponential decrease of superconducting transition temperature Tc on DW background because of it exponential dependence on electron density of states (DoS) at the Fermi level according to BCS theory. However, usually, one observes a more complicated SC-DW interplay: the superconducting transition temperature Tc has a dome-like shape, being the highest at the quantum critical point (QCP) where the DW is suppressed by an external parameter. Tc of SC is often higher on the DW background than without DW. Why the enhancement of SC coupling by critical DW fluctuations overcomes the DoS reduction by DW? Surprisingly, the DoS at the Fermi level withstands the DW with imperfect nesting because the dispersion of remaining electrons on the Fermi surface is strongly renormalized. This explains the observed increase of SC transition temperature in DW state. Biography Prof. Pavel Grigoriev, obtained his Ph.D. (2001) and Doctor of Science (2015) degrees from the Landau Institute for Theoretical Physics. After the postdoctoral research under supervision of Lev Gor'kov at NHMFL (Tallahassee, USA) is a permanent researcher at Landau Institute. Since 2015 also a professor at National University of Science and Technology MISIS. His research interests include strongly correlated electron systems, magnetoresistance of layered conductors, neutron physics, liquid helium. 2) 11:00:00 по московскому времени: Xianxin Wu (Institute of Theoretical Physics, CAS) Microscopic Mechanisms of Exotic Electronic Orders and Unconventional Superconductivity Uncovering the microscopic mechanisms of unconventional electronic orders and high-Tc superconductivity remains a central challenge in correlated-electron physics. In this talk, I will discuss two examples of how electronic structure and interactions can generate exotic quantum phases. First, I will present a theoretical scenario where a sublattice interference effect associated with van Hove singularities drive the long-sought loop-current order in kagome lattices, and discuss exotic pairing states in kagome metals. I will then introduce an itinerant framework in which scattering between states of opposite mirror parity unifies the understanding of magnetism and unconventional superconductivity in high-Tc multilayer nickelates. Biography Dr. Xianxin Wu received his Ph.D. from the Institute of Physics, Chinese Academy of Sciences, in 2016. From 2016 to 2022, he conducted postdoctoral research at the University of Würzburg and the Max Planck Institute for Solid State Research. In 2022, he joined the Institute of Theoretical Physics, Chinese Academy of Sciences. His research focuses on high-Tc superconductivity, topological superconductivity, strongly correlated electron systems, and topological phases of matter. Zoom: 391 106 6816 Passcode: 202512 ------------------------------ Subject: Digest Footer _______________________________________________ Seminars mailing list Seminars@itp.ac.ru https://mailman.itp.ac.ru/mailman/listinfo/seminars ------------------------------ End of Seminars Digest, Vol 89, Issue 5 ***************************************

Friday, October 16, 2026

Seminars Digest, Vol 89, Issue 4

Wednesday, October 14, 2026

Inspecting an asteroid crash site, four years later

Inspecting an asteroid crash site, four years later | 1st SpaceX Starship to survive came home to its launch site | 2 spacecraft in orbit and 8 more coming soon

Created for znamenski.spacecom@blogger.com | Web Version

October 14, 2026

Taking you out of this world, every day

The Launchpad

Inspecting an asteroid crash site, four years later

In September 2022, NASA's DART mission slammed a kinetic impactor into a small asteroid called Dimorphos in what was humanity's first test of a planetary defense technique. The test showed that we can change an asteroid's orbit, to one day possibly knock one off of a collision course with Earth.

Finally, after four years, another spacecraft will arrive at the crash site to examine what the first-of-its-kind collision accomplished. We have a deep-dive into the European Space Agency's Hera mission that lays out what we can expect as the Hera probe arrives at Dimorphos to see the asteroid wreckage up close. In other news, we've got a look at SpaceX's first Starship to survive reentry. The company recently returned Ship 40 back to its Starbase facility after a long, tumultuous voyage. In the astronomy world, scientists are reevaluating whether the universe's largest explosions, known as hypernova, actually ever happened after all.

We've got all that and more in your daily read below.

Hera probe's arrival

Spaceflight

1st SpaceX Starship to survive came home to its launch site

After surviving its splashdown and a grueling journey at sea, SpaceX's Ship 40 has returned to Starbase, where engineers will study the first recovered Starship upper stage for clues to future reusability.

Home at last

2 spacecraft in orbit and 8 more coming soon

Reentry provider Varda Space Industries is currently flying two spacecraft in Earth orbit and has eight more missions planned in the next year.

There and back again

Science & Astronomy

Universe's biggest explosions may have never happened at all

Scientists have discovered that some of the universe's most powerful explosions, hypernovas, may not happen at all.

Hypernova hype?

Earth's poles shifted fast during the age of dinosaurs

The location of Earth's geographic poles has changed several times over the past 320 million years in a process known as true polar wander.

Polar wander

Today in Space

Space photo of the day: Cosmic 'jellyfish' wows skywatchers

A "jellyfish" in the early-morning sky created by SpaceX's launch of the CRS-35 cargo mission on Oct. 13, 2026.

SpaceX fireworks

Entertainment

'We basically did Top Gun in space'

The sophomore season of "Star Trek: Starfleet Academy" will warp back to the small screen in March 2027 when the limited series returns for its final season on Paramount+.

Sophomore year

Editor's Note

It's never a dull week in space is it? Looking ahead at the back half of this week, we'll have a deep look into NASA's planned SkyFall mission that will send a trio of helicopters to Mars on a nuclear powered rocket, a preview of this month's Orionid meteor shower, and some fascinating results about brown dwarfs from NASA's SPHEREx observatory.

And remember — to stay up to date with all that and more, you can now get Space.com right in the palm of your hand with our new app available now on iOS and Android.

Ad astra,
Brett Tingley, Managing Editor