Central European Institute for Cosmology and Fundamental Physics

Upcoming seminars

27/01/2022, 16:00
Adolfo Cisterna (TIFPA-INFN, Trento, Italy)
Taub-NUT spacetimes at the service of exact black bounces: Black holes, wormholes and bouncing cosmologies with a self-interacting scalar field
We present a new family of exact four dimensional Taub-NUT spacetimes in Einstein-Λ theory supplemented with a conformally coupled scalar field exhibiting a power-counting super-renormalizable potential. Our configurations are constructed in the following manner: A solution of a conformally coupled theory with a conformal potential, henceforth the seed (gμν,Φ), is transformed by the action of a specific change of frame in addition with a simultaneous shift of the scalar seed. The conformal factor of the transformation and the shift are both affine functions of the original scalar Φ. The new configuration, (g'μν,Φ'), now solves the field equations of a conformally coupled theory with the extended aforementioned renormalizable potential, this under the presence of an effective cosmological constant. The new solution spectrum is notoriously enhanced with respect to the original seed containing regular black holes, wormholes and bouncing cosmologies. For a non-vanishing cosmological constant exact black hole to wormhole and black hole to bouncing cosmology transitions are observable, both smoothly controlled by the mass parameter.

Sk Jahanur Hoque (Charles University, Prague, Czechia)

Matthias Bartelmann (Heidelberg University, Germany)

Sergey Ketov (Tokyo Metropolitan University, Japan)

Christos Charmousis (IJCLab Orsay, France)

Past seminars

Valerie Domcke (CERN, Geneva, Switzerland)
Cosmology with axion-like particles

Marco Crisostomi (SISSA, Trieste, Italy)
Gravitational wave generation in dark energy theories

Ville Vaskonen (IFAE, Barcelona, Spain)
Probing dark matter through gravitational waves

Anamaria Hell (LMU, Munich, Germany)
Exploring the dualities of massive gauge theories: Aμ vs. Bμν

Graham White (University of Tokyo, Japan)
Archaeology on the origin of matter

Tomislav Prokopec (Utrecht University, Netherlands)
Quantum origin of dark energy and the Hubble tension

Camilo Garcia Cely (DESY, Germany)
The CMB as a detector of gravitational waves

Stian Hartman (University of Oslo, Norway)
Self-interacting Bose-Einstein condensed dark matter; cosmological constraints and simulations

Farbod Hassani (University of Oslo, Norway)
Characterizing the non-linear evolution of dark energy and modified gravity models

Roman Konoplya (Peoples' Friendship U., Moscow, Russia)
Traversable wormholes in General Relativity without exotic matter

Anton Baleato Lizancos (UC Berkeley, USA)
Fundamental Physics with CMB Lensing and Delensing

Jan Burger (University of Iceland, Reykjavik, Iceland)
Conservation of radial actions in time-dependent spherical potentials


Academic year 2000/2001


17/06/2021 - 4pm, Marco Astorino (INFN, Milano, Italy), Multi-black holes at equilibrium in an external gravitational field

10/06/2021 - 4pm, Francis-Yan Cyr-Racine (University of New Mexico), A cosmological dark matter collider experiment

27/05/2021 - 4pm, Daniel Litim (University of Sussex, UK), Asymptotic safety - from particle physics to quantum gravity

20/05/2021 - 4pm, Macarena Lagos (Columbia University, NY, USA), Interacting Gravitational Waves

13/05/2021 - 4pm, Swetha Bhagwat (Sapienza, University of Rome, Italy), Merger-ringdown consistency test

06/05/2021 - 4pm, Viviana Niro (APC Paris, France), Neutrinos from galactic sources

29/04/2021 - 4pm, Emel Altas (Karamanoglu Mehmetbey University, Turkey), Nonstationary energy in general relativity and approximate analytical description of apparent horizons for initial data with momentum and spin

22/04/2021 - 4pm, Teodor Borislavov Vasilev (Universidad Complutense de Madrid, Spain), Classical and quantum f(R) cosmology: The big rip, the little rip and the little sibling of the big rip

15/04/2021 - 4pm, Famaey Benoit (Observatoire astronomique de Strasbourg, France), MOND: phenomenological review and constraints for model-building

25/03/2021 - 4pm, Johannes Noller (Cambridge University - DAMTP, UK), Testing gravity on all scales

18/03/2021 - 4pm, Kazuya Koyama (Portsmouth U., ICG, UK), General relativistic weak-field limit and Newtonian N-body simulations

11/03/2021 - 4pm, Raissa Mendes (Universidade Federal Fluminenense, Brazil), Probing general relativity with the most extreme neutron stars

04/03/2021 - 4pm, Ali Seraj (Universite Libre de Bruxelles, Belgium), Gravitational memory in modified gravity and two-form symmetries

18/02/2021 - 4pm, François Larrouturou (IAP Paris, France), Refocus on the essentials: introducing the Minimal Theory of Bigravity

11/02/2021 - 4pm, Ondrej Hulik (Charles University, Prague), Generalized and Exceptional geometry, A Unified Framework

04/02/2021 - 4pm, Giulia Cusin (Universite de Geneve, Switzerland), Catalogue and background description of a population of GW sources: features, complementarities and caveats.

28/01/2021 - 4pm, Paolo Benincasa (IFT Madrid, Spain), Towards a reformulation of QFT in expanding universes.

21/01/2021 - 4pm, Timothy Anson (Universite Paris-Saclay, France), Disforming the Kerr metric

14/01/2021 - 4pm, Siddharth Prabhu (Tata Institute of Fundamental Research, India), The holographic nature of quantum information storage in asymptotically flat spacetimes

17/12/2020 - 4pm, Oksana Iarygina (Leiden University, NL), The physical mass scales of multi-field preheating

10/12/2020 - 4pm, Horng Sheng Chia (Institute for Advanced Study, Princeton, USA), Tidal Deformation and Dissipation of Rotating Black Holes

03/12/2020 - 4pm, Antony Lewis (University of Sussex, UK), Concordance, tensions and gravitational lensing

26/11/2020 - 4pm, Eiichiro Komatsu (Max-Planck-Institut für Astrophysik, Germany), Hunting for parity-violating physics in polarisation of the cosmic microwave background

19/11/2020 - 4pm, Mikhail Shaposhnikov (EPFL), Einstein-Cartan gravity: Inflation, Dark Matter and Electroweak Symmetry Breaking

12/11/2020 - 4pm, William Barker (Kavli Institute for Cosmology, Cambridge, UK), Dark energy and radiation from the novel gauge gravity theories

05/11/2020 - 4pm, Fedor Bezrukov (University of Manchester, UK), What do we know about preheating in Higgs Inflation and its relatives?

22/10/2020 - 4pm, Eugene Lim (King's College London, UK), Challenging the Inflationary Paradigm

15/10/2020 - 4pm, Filippo Camilloni (University of Perugia, IT and Niels Bohr Institute, DK), Moving away from the Near-Horizon Attractor of the Extreme Kerr Force-Free Magnetospheres

08/10/2020 - 4pm, Anne Green (University of Nottingham, UK, Primordial Black Holes as a dark matter candidate

12/03/2020, 16:00 Keigo Shimada (Tokyo Institute of Technology), Metric-affine Geometry and Ghost-free structure of Scalar-tensor Theories

02/03/2020, 14:00 Tarek Anous (University of Amsterdam), Areas and entropies in BFSS/gravity duality

27/02/2020, 16:00 Elias Kiritsis (APC, Paris & Crete University), Emergent gravity from Hidden sectors

20/02/2020, 16:00 Georgios Loukes-Gerakopoulos (Astronomical Institute, Prague), Model agnostic approaches to cosmology

13/02/2020, 16:00 Paolo Creminelli (ICTP, Trieste), Initial Conditions for Inflation

30/01/2020, 16:00 Tomas Ledvinka (Charles University, Prague), Dynamic vacuum spacetimes in a computer

29/01/2020, 14:00 Harold Erbin (University of Turin), Machine learning for QFT

23/01/2020, 16:00 Chris Clarkson (Queen Mary University of London) - CANCELLED , General relativity in the era of large scale surveys

16/12/2019, 16:00 Pavel Motloch (CITA, Toronto), Galaxy spins as probes of fundamental physics

12/12/2019, 16:00 Filippo Vernizzi (Universite Paris Saclay), Dark energy after gravitational wave observations

28/11/2019, 16:00 Guillermo Ballesteros (Autonoma University, Madrid), Primordial black hole dark matter from inflation

21/11/2019, 16:00 Giovanni Acquaviva (Charles University, Prague, CZ), Emergent gravity, Bekenstein bound and unitarity

04/11/2019, 16:00   Dionysios Anninos, de Sitter horizons and sphere partition functions

17/10/2019, 16:00   Sk Jahanur Hoque, Conserved charges in asymptotically de Sitter spacetimes

10/10/2019, 16:00   Cosimo Bambi, Testing general relativity using X-ray reflection spectroscopy

03/10/2019, 14:00   Dalimil Mazac, Sphere packing, quantum gravity and extremal functionals

02/10/2019, 11:00   Thales Azevedo, (DF)^2 gauge theories and strings

01/10/2019, 14:00   Poulami Nandi, Field Theories with Conformal Carrollian Symmetry

30/09/2019, 14:00   Antoine Bourget,  The Higgs Mechanism - Hasse Diagrams for Symplectic Singularities

19/09/2019, 16:00    Gizem Sengor,  Unitarity at the Late Time Boundary of de Sitter

16/08/2019, 14:00    Tomas Prochazka, Thermodynamics Bethe Ansatz

12/08/2019, 14:00    Camilo Garcia-Cely, Self-interacting Spin-2 Dark Matter

01/08/2019, 16:00    Andrei Frolov, Cosmic dust is everywhere

22/07/2019, 14:00    Agnes Ferte, Probing The Accelerated Universe Through Weak Lensing

19/07/2019, 14:00    Xingang Chen, Probing the Origin of the Big Bang Cosmology

16/07/2019, 14:00    Leonardo Modesto, Nonlocal Quantum Gravity

15/07/2019, 11:00    Mirek Rapcak, On Miura transformation for $W_{n|m \times \infty}$ and related geometry

11/07/2019, 14:00    David Svoboda, Paracomplex Geometry and Twisted Supersymmetry

08/07/2019, 14:00    Adolfo Cisterna, Homogenous AdS black strings in General Relativity and Lovelock theories

04/07/2019, 14:00    Cesar Arias,  Higher Spins and Topological Strings

24/06/2019, 14:00    Andrea Fontanella, Hidden relativistic symmetry in AdS/CFT

10/06/2019, 14:00    Dmitry Gorbunov, Higgs inflation in weak coupling regime

07/06/2019, 14:00    Mairi Sakellariadou, Stochastic gravitational waves background and its anisotropies

04/06/2019, 13:30    Tanmay Vachaspati, A Classical-Quantum Correspondence

21/05/2019, 16:00    Julian Adamek, Gevolution v1.2 - relativistic N-body simulations and light-cone analysis

13/05/2019, 14:00    Tomislav Prokopec, Quantum corrections during inflation

10/04/2019, 14:00    Ogan Ozsoy, Probing Early Universe on Small Scales

25/03/2019, 14:00    James Bonifacio, Shift Symmetries in (Anti) de Sitter Space

18/03/2019, 14:00    Masahide Yamaguchi, Higher derivative scalar-tensor theory through a non-dynamical scalar field

14/03/2019, 16:00    Stefano Camera,  Synergic cosmology across the spectrum

28/02/2019, 16:00    Gizem Sengor,  A look at Cosmological Perturbations during Preheating with Effective Field Theory Methods

27/02/2019, 14:00    Antonio Racioppi,  The Palatini side of inflationary attractors

25/02/2019, 14:00    Jakub Vicha,  Probing the Universe at the Highest Energies with the Pierre Auger Observatory

19/02/2019, 14:00    Yuji Satoh,  TBA (room 226)

18/02/2019, 14:00    Vojtech Witzany,  Spin-perturbed orbits near black holes

10/12/2018, 14:00    Shinji Mukohyama,  Minimalism in modified gravity

26/11/2018, 14:00    Ondrej Pejcha,  Explosive deaths of stars: core-collapse supernovae and stellar mergers

23/11/2018, 14:00    Rachel Houtz,  Color Unified Dynamical Axion

22/11/2018, 16:00    Antonino Marciano,  Non-dynamical torsion from fermions and CMBR phenomenology

20/11/2018, 14:00    Andrea Addazi,  Gravitational waves from Dark bubbles in the early Universe

05/11/2018, 14:00    Subodh Patil,  Tensor bounds on the hidden universe

25/10/2018, 16:00    Alexey Golovnev,  Modified teleparallel gravity

16/10/2018, 14:00    Lasha Berezhiani,  Superfluid Dark Matter

15/10/2018, 14:00    Hiroyuki Sagawa,  Recent results of the Telescope Array experiment on ultra-high energy cosmic rays (Division Seminar)

15/10/2018, 11:00    Hidehiko Shimada,  TBA

08/10/2018, 14:00    Katherine Freese,  Inflationary Cosmology in Light of Cosmic Microwave Background Data

17/09/2018, 14:00    Elena de Paoli,  A gauge-invariant symplectic potential for tetrad general relativity

30/07/2018, 13:30    Shun-Pei Miao,  A Cosmological Coleman Weinberg Potentials and Inflation


27/07/2018, 14:00    Richard Woodard,  A Nonlocal Metric Realization of MOND


26/07/2018, 14:00    Dam Thanh Son,  From fractional quantum Hall effect to field-theoretical dualities


25/07/2018, 14:00    Oleg Teryaev,  Graviitational formfactors and pressure in elementary particles


24/07/2018, 14:00    Renato Costa,  Singularity free Universe in double field theory


18/07/2018, 14:00    Massimiliano Rinaldi,  Scale-invariant inflation


17/07/2018, 14:00    Alessandro Drago,  What do mergers of neutron stars tell us about nuclear physics?


16/07/2018, 14:00    Miroslav Rapcak,  Representation Theory of Vertex Operator Algebras and Gukov-Witten defects


12/07/2018, 14:00    Jarah Evslin,  Cosmic Expansion Anomalies as Seen by Baryon Acoustic Oscillations


03/07/2018, 14:00    Yi-Zen Chu,  Theoretical Explorations in Gravitational Physics


28/06/2018, 14:00    Andreas Albrecht,  Perspectives on Cosmic Inflation


27/06/2018, 14:00    Andreas Albrecht,  Einselection and Equilibrium


26/06/2018, 14:00    Eugeny Babichev,  Hamiltonian vs stability and application to scalar-tensor theories

25/06/2018, 14:00    Wojciech Hellwing,  How to falsify CDM (and test its alternatives)?

15/06/2018, 11:00    Emre Kahya,  Loop Corrections to Primordial non-Gaussianties


14/06/2018, 16:00    Emre Kahya,  GW170817 Falsifies Dark Matter Emulators


12/06/2018, 14:00    Dam Thanh Son,  Quantum Hall effect and field-theoretic dualities


06/07/2018, 14:00    Sébastien Clesse,  Primordial Black Holes as the Dark Matter


21/05/2018, 14:00    Maksym Ovchynnikov ,  New physics at the intensity frontier


17/05/2018, 16:00    Lorenzo Pizzuti,  Modified gravity with galaxy cluster mass profiles: from data to simulations


15/05/2018, 15:00    Santiago Casas,  Model-independent tests of gravity with present data and future surveys


07/05/2018, 14:00    Diego Blas,  Probing dark matter properties with pulsar timing


04/05/2018, 14:00    Peter Tinyakov,  Compact stars as dark matter probes


03/05/2018, 14:00    Jan Novák,  Scalar perturbations of Galileon cosmologies in the mechanical approach in the late Universe


12/04/2018, 14:00    Tomi Koivisto,  Symmetric Teleparallelism


10/04/2018, 14:00    Luca Marzola,  The 21-cm Line


27/03/2018, 14:00    Julian Adamek,  Evolving The Metric - N-body simulations for relativistic cosmology

20/03/2018, 14:00     Patrick Stengel,  The Higgs boson can delay Reheating after Inflation

15/03/2018, 14:00    Ilidio Lopes,  Impact of dark matter in stellar oscillations

20/02/2018, 14:00     Eric Bergshoeff,  Gravity and the spin-2 planar Schroedinger equation

12/02/2018, 14:00     Roberto Oliveri,  Gravitational multipole moments from Noether charges

01/02/2018, 16:00     Luca Visinelli,  Axions in cosmology and astrophysics

30/01/2018, 14:00     Eleonora Villa,  Theoretical systematics in galaxy clustering in LCDM and beyond

23/01/2018, 14:00     Petr Satunin,  Constraints on violation of Lorentz invariance from atmospheric showers initiated by multi-TeV photons

12/12/2017, 14:00     David Svoboda,  Twisted brackets, fluxes, and deformations of para-Kahler manifolds

11/12/2017, 16:00     Martin Roček,  WZW models and generalized geometry

05/12/2017, 14:00     Dimitris Skliros,  Coherent states in String Theory

04/12/2017, 14:00     Ed Copeland,  Screening mechanisms and testing for them in cosmology and the laboratory

30/11/2017, 14:00     Marc Gillioz,  Sum Rules for the "c" Anomaly in 4 Dimensions

28/11/2017, 14:00     Sugumi Kanno,  Decoherence of Bubble Universes

27/11/2017, 14:00     Rachel Houtz,  Little Conformal Symmetry and Neutral Naturalness

08/11/2017, 14:00     Pierre Fleury,  Weak lensing with finite beams

07/11/2017, 14:00     Frederik Lauf,  Classification of three-dimensional Chern-Simons-matter theories

06/11/2017, 14:00     Andrei Gruzinov,  Particle production by real (astrophysical) black holes

23/10/2017, 14:00     George Pappas,  Neutron stars as matter and gravity laboratories

16/10/2017, 14:00     Tessa Baker,  Tests of Beyond-Einstein Gravity

02/10/2017 14:00    Piotr Surowka  New developments in hydrodynamics
08/09/2017, 14:00   Dani Figueroa  Higgs Cosmology: implications of the Higgs for the early Universe
06/09/2017, 14:00    Sergey Ketov  Starobinsky inflation in supergravity
06/09/2017, 11:00   Dalimil Mazáč  Analytic conformal bootstrap and QFT in AdS2
29/06/2017, 14:00   Bruce Bassett  Rise of the Machine: AI and Fundamental Science
28/06/2017,  14:00   Dmitri Semikoz  Signatures of a two million year old nearby supernova in antimatter data
02/06/2017,  14:00   David Alonso  Science with future ground-based CMB experiments
22/05/2017,  14:00   Mathieu Langer  Magnetizing the intergalactic medium during reionization
16/05/2017,  16:00   Sergey Sibiryakov  Counts-in-cells statistics of cosmic structure
25/04/2017,  14:00    Ippocratis Saltas  What can unimodular gravity teach us about the cosmological constant?
12/04/2017,  14:00    Andrei Nomerotski  Status and Plans for Large Synoptic Survey Telescope
06/04/2017,  14:00    Alex Vikman  The Phantom of the Cosmological Time-Crystals
03/04/2017,  14:00    Jnan Maharana  Scattering of Stringy States and T-duality
27/03/2017,  14:00   Michal Bilek  Galaxy interactions in MOdified Newtonian Dynamics (MOND)
27/02/2017,  16:00   Misao Sasaki,  Signatures from inflationary massive gravity
23/02/2017,  14:00   Misao Sasaki, Inflation and Beyond
14/12/2016,  14:00   Giovanni Acquaviva,Dark matter perturbations with causal bulk viscosity
09/12/2016,  14:00   David Pirtskhalava  Relaxing the Cosmological Constant
14/11/2016,  14:00   Glenn Barnich,   Finite BMS transformations
18/10/2016   14:00   Eugeny Babichev, Gravitational origin of dark matter