Speaker: Samir K Mondal, Principal Scientist, CSIR-Central Scientific Instruments Organisation, Chandigarh, India

Dr. Graham de Ruiter, Assistant professor, the Schulich Faculty of Chemistry, Technion - Israel Institute of Technology. Language: English

Come and join a lively discussion with successful Japanese and non-Japanese Fellowship recipients.

Seminar by Prof. Walter Farina (School of Exacts and Natural Sciences of the University of Buenos Aires)

"Neurorobotics in the context of The Human Brain Project" by Dr. Florian Röhrbein, Technical University of Munich, now Alfred Kärcher SE & Co. KG

This is the weekly QG group meeting.

Speaker: Vyacheslav Lysov

Title: Fluid/Gravity Correspondence

Prof. Stefan Wanke, TU Dresden, Germany

Prof. Dr. Jan J. Weigand, Professor, TU Dresden

SEMINAR: Magnetic behaviour of substitutional pseudobinaries of CeFe 2 1

by Rakesh Das ( Department of Applied Science, Haldia Institute of Technology, Haldia-721657, India)

Anika Haller (Helmholtz-Zentrum Berlin, Germany)

Georg Michelitsch, Technische Universität München, Germany

Mr. Katawoura Beltako, Nanodevice Quantum Simulation (NQS Group) Aix-Marseille University, France

Speaker: Dr. Vincnezo Vitagliano from Keio University Abstract: External conditions have a dramatic impact on the way dynamical symmetry breaking occurs. I will review some recent (and some less recent) results of symmetry breaking in curved spacetime. Flirting with the contemporary interest toward 2D engineered material, I will then move on potential applications on geometrically deformed lattices. In a curved background, the natural expectation is that curvature works toward the restoration of an internal symmetry. I will show instead that, for topological defects, the competing action of the locally induced curvature and of boundary conditions generated by the non-trivial topology allows configurations where symmetries can be spontaneously broken close to the core.

"Many-body quantum spectroscopies in extremes" by Prof. Mack Kira, University of Michigan

Hosted by TQM unit.

Prof. Masaya Sawamura, Professor, Hokkaido University. Language: English

Neural Computation Unit (Doya Unit)

Stable homotopy and differential topology

Gravity on large scales is relatively well understood. For galaxies, planets and apples: we have Einstein’s General Relativity with which to make accurate predictions. But on small scales, where quantum mechanics becomes important, gravity is more difficult to understand, and as a result we lack precise descriptions of various natural phenomena (such as black holes).

One way to make progress in in our search for quantum gravity is to start from the large scale theory we know and love (at the ‘bottom’), and look for ways in which it may be modified and improved as we zoom in to smaller scales (going ‘up’ to a more fundamental theory).

Recent progress in ‘Effective Field Theory’ may shed some light on the connections between large and small scale physics. By exploiting certain physical properties of scattering probabilities (e.g. that they are unitary, causal and local), one can derive an infinite number of constraints which any large scale theory must satisfy in order to admit a sensible small scale completion.

In this talk, I will provide an overview of these new ‘positivity constraints’, and discuss their implications for quantum gravity.

[Topology and Geometry Seminar] "Solving Word Problems in finitely presented groups" by Robert Tang

Dr. Sebastian Reinig, Postdoc, National Institute of Genetics. Language: English

"Ultra-strong light-matter interactions and super-radiant phase transitions" by Prof Motoaki Bamba, Osaka Univ

Speaker Dr. Tomoaki Matsuura, Associate Professor at Department of Biotechnology, Graduate School of Engineering, Osaka University.

"Dr. Shugo Suwazono, Chief of the Division of Neurology, National Hospital Organization Okinawa Hospital. Language: English, no interpretation."

"Dr. Yuji Yamanashi, Professor, The Institute of Medical Science, The University of Tokyo. Language: English, no interpretation."

"Broadband plasmonics in the optical and THz range" by Prof. Venu Gopal Achanta, DCMP&MS, Tata Institute of Fundamental Research, Mumbai, India

Internal Seminar, Friday August 3rd, C700, 4-5pm

Internal Seminar, Friday August 3rd, 2018, 4pm

Topology and Geometry unit seminar

Dr. Jafar Sharif, RIKEN IMS, Yokohama Japan

Mr. Asem Elarabi, Department of Electronic Science and Engineering, Kyoto University

Language: English

p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica} Professor Satoru Kidoaki, Institute for Materials Chemistry and Engineering, Kyushu University

Laboratory of Biomedical and Biophysical Chemistry, IMCE, Kyushu University

This talk will take as a starting point the Skyrmions as baryons in large- N QCD. It is further assumed that at high density, the sextic term in derivatives becomes dominant at some large density. This assumption is based on the observation that the term behaves like a perfect fluid, which is welcome for nuclear matter at large density – an environment suitable for the studies of neutron stars. With very large masses and compact radii, neutron stars become the closes known stable objects to the critical line of gravitational collapse. With some phenomenological motivation in mind, we consider the possibilities of finding exact analytic solutions to a system which is approximated by the sextic derivative term and a potential; this system is called the BPS-Skyrme model. We find a condition for when the gravitating soliton equations can be solved exactly and deduce the phenomenological implications. We furthermore find that this system has the peculiarity of not having stable black holes, meaning that the soliton cannot become scalar hair of a black hole. This is somewhat surprising, because the Skyrme soliton with a fourth-order derivative term can become stable black hole hair. We write down a class of models with higher-order derivative terms and find 2 new models that can sustain stable hair and 2 new that cannot.

Finally, we consider the problem of the classical binding energies of the Skyrmions, which are far too large compared to nuclei and explain a solution to this problem based on holography. Interestingly the solution from holography relates the baryon to the instanton of a 5-dimensional theory and the moduli of the instanton become massive modes in the Skyrmion. These modes in addition to the zero modes of the Skyrmion are expected to describe the spectra of nuclei.

We are pleased to invite you to attend the seminar!

Neural Computation Unit (Doya Unit)

Prof. Jevon Longdell, Associate Professor, University of Otago.

Language: English

"Halide Perovskites for Photovoltaic and Light-Emission Applications" Prof. Sam Stranks, Cavendish Labratory, University of Cambridge

Internal Seminar, Friday July 20th, 2018, 4-5pm C700

Internal Seminar, Friday July 20th, 2018, C700

The Library would like to invite you to the Institutional Repository (OISTIR) Seminar on July, 20 (Friday).

Last year, we held "Institutional Repository & Archival of Research Data" in cooperation with the Dean of Research Office.

This year, we would like to give information about Open Access and some updates related to OISTIR.

Date: July 20 (Friday)

Time: 10:00-10:25 (English)

10:30-10:55 (Japanese)

Venue: B250, Center Building

Seminar by Prof. Ariane Briegel, Professor of Ultrastructural biology

Ecology and Evolution seminar #6 Semiar by Prof. Tatiana Tatarinova (University of La Verne), July 18th (Wed) 2-3pm at B250. All is welcome.

Prof. Nobuhiko Tokuriki, Michael Smith Laboratories, University of British Columbia, Vancouver, BC Canada

Dr. Kevin Dorgans, Postdoc, Universite de Strasbourg. Language: English

p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 18.5px Times} p.p2 {margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Times}

Dr. Naruya Saitou, Professor, Division of Population Genetics, National Institute of Genetics, Mishima

Language: English, no interpretation

Dr. Andrés A León Baldelli, CNRS - Centre national de la recherche scientifique, France. Language: English, no interpretation.

Internal Seminar, Friday July 6th, 2018, 4-5pm, C700 (lab 3)

Internal Seminar: Friday, July 6th, 2018, 4-5pm, C700 (Lab 3)

Seminar: "Interlayer excitons confined in a moiré potential" by Prof. Xiaoqin E Li, UT-Austin.

Prof. Michael Laessig, University of Cologne