HECAP

Europe/Rome 2018-02-22 14:30:00 2018-02-22 16:00:00 The Astrophobic Axion Abstract. Reliable estimates of the allowed range for axion couplings to photons, nucleons and electrons are of major importance for determining the viable axion mass window as well as to focus experimental axion searches. We show that in a class of generalized DFSZ axion models with generation dependent Peccei-Quinn charges the axion couplings to nucleons and electrons can be simultaneously suppressed. Astrophysical limits from the SN1987A burst duration and from white dwarf cooling can therefore be relaxed, and as a consequence for such an astrophobic axion a mass window up to O(0.1) eV remains open. Since the axion-photon coupling remains sizeable, the proposed IAXO helioscope will become crucial to search for axions of this type. An unavoidable consequence of astrophobia are flavor off-diagonal axion couplings at tree-level, so that experimental limits on flavor-violating processes can also provide a powerful tool to constrain this scenario. The astrophobic axion can be a viable dark matter candidate in the heavy mass window, and can also account for anomalous energy loss in stars. ICTP ICTP pio@ictp.it 22 Feb 2018

Europe/Rome 2018-02-27 14:30:00 2018-02-27 16:00:00 What's inside a black hole? ICTP ICTP pio@ictp.it 27 Feb 2018

Europe/Rome 2018-03-01 14:30:00 2018-03-01 16:00:00 On the initial value problem in Lovelock and Horndeski theories of gravity Abstract. Lovelock and Horndeski theories are natural generalisations of Einstein's theory of General Relativity with second order equations of motion. While their applications in astrophysics and cosmology have been thoroughly explored, the issue of their mathematical consistency has received little attention. In particular, it is not known whether these theories admit a well-posed initial value problem, a necessary requirement for any classical theory to make sense. If this condition were not satisfied, these theories would not constitute a viable alternative to General Relativity. In this talk, I will discuss why the standard method used to establish the local well-posedness of the Einstein equations fails for these theories. ICTP ICTP pio@ictp.it 1 Mar 2018

Europe/Rome 2018-03-02 14:30:00 2018-03-02 16:00:00 6d Theories on Curves Abstract.  I review recent progress in compactifying (1,0) SCFT's in 6d on curves and discuss the resulting N=1 SCFT's in 4d. ICTP ICTP pio@ictp.it 2 Mar 2018

Europe/Rome 2018-03-14 07:00:00 2018-03-22 21:00:00 Spring School on Superstring Theory and Related Topics | (smr 3193) ICTP's annual Spring School on Superstring Theory and Related Topics provides pedagogical treatment of these subjects through lectures by some of the world's top string theorists.  The activity is intended for theoretical physicists or mathematicians with knowledge of quantum field theory, general relativity and string theory.  It is organized in collaboration with the Asia Pacific Center for Theoretical Physics (APCTP) and the Italian Institute for Nuclear Physics (INFN). TOPICS:   Aspects of 5d and 6d SUSY Theories Dualities and Exact Results in 3d QFT Entanglement in QFT Gravitational Waves Large N Models Primordial Cosmology The Averaged Null Energy Condition in QFT Lecturers include: Daniel BAUMANN (University of Amsterdam) Francesco BENINI (SISSA) Thomas HARTMAN (Cornell University) Marina HUERTA (Centro Atomico Bariloche) Ken INTRILIGATOR (UC San Diego) Igor KLEBANOV (Princeton University) Rafael A. PORTO (ICTP-SAIFR) NOTE: There is no registartion fee for this activity. ICTP ICTP pio@ictp.it 14 Mar 2018 - 22 Mar 2018

Europe/Rome 2018-05-28 08:00:00 2018-06-01 22:00:00 Advanced Workshop on Physics of Atmospheric Neutrinos - PANE 2018 | (smr 3207) Atmospheric neutrino experiments were the first ones to discover 20 years ago the phenomenon of neutrino oscillations, to establish existence of non-zero neutrino mass and large lepton mixing. Studies of atmospheric neutrinos are used to search for new physics beyond the 3-neutrino paradigm, including sterile neutrinos, non-standard neutrino interactions, effects of violation of fundamental symmetries of Nature. Now the field moves to the next phase of high-precision studies, which will enable us to effectively use atmospheric neutrinos as a tool to determine the mass ordering, octant of the 2-3 mixing angle and the Dirac CP-violating phase. In this connection, knowledge of the atmospheric neutrino fluxes at percent level is needed, which requires higher precision determination of both cosmic ray fluxes and neutrino-nucleon cross sections, as well as a better control over systematics. Understanding of atmospheric neutrinos is essential to estimate background for diffuse supernova neutrinos, proton decay, future dark matter direct/indirect detection experiments, and high-energy cosmic neutrinos. The goal of this workshop is to further explore physics potential of atmospheric neutrinos and support the physics case of new experiments on atmospheric neutrinos. We plan to bring together leading experts in both theory and experiment as well as young researchers to assess the state-of-the-art knowledge in this field and to foster further theoretical, phenomenological, and experimental studies in atmospheric neutrino physics. The programme will be mainly composed of the invited talks. Some time will be allocated for the oral presentations selected from submitted abstracts. It will be possible to display posters during whole time of the workshop. Papers which will not be selected for oral presentations can be presented as posters. Ample time will be given for discussion. List of Topics: Results from atmospheric neutrino experiments Analysis of the data and treatment of systematics Cosmic ray fluxes at all energies Neutrino-nucleon and neutrino-nucleus interactions Computation of atmospheric neutrino fluxes Prompt atmospheric neutrinos Oscillations and absorption of neutrinos in the Earth Neutrino tomography of the Earth Determination of mixing angles, mass hierarchy, and CP-phase Searches for sterile neutrinos Searches for non-standard neutrino interactions Tests of fundamental symmetries Future experiments with atmospheric neutrinos Solar atmospheric neutrinos Atmospheric neutrinos as a background for diffuse supernova neutrinos, proton decay, dark matter searches Atmospheric neutrinos and cosmic neutrinos Synergy/Complementarity among atmospheric and LBL experiments List of Confirmed Speakers (to date): Evgeny Akhmedov (MPI, Heidelberg) Carlos Alberto Arguelles Delgado (MIT) John F. Beacom (Ohio State University) Christophe Bronner (Kavli IPMU, University of Tokyo) Mauricio Bustamante (Niels Bohr Institute) Sandhya Choubey (HRI, Allahabad) Paschal A. Coyle (CPPM, Marseille) Vivek M. Datar (TIFR, Mumbai) Gianfranca De Rosa (INFN, Naples) Arman Esmaili (PUC, Rio de Janeiro) Anatoli Fedynitch (DESY, Zeuthen) Thomas K. Gaisser (University of Delaware) Hugh Gallagher (Tufts University) Srubabati Goswami (PRL, Ahmedabad) Darren R. Grant (University of Alberta) Morihiro Honda (ICRR, University of Tokyo) Amina Khatun (IOPB, Bhubaneswar) Ranjan Laha (Mainz University) John G. Learned (University of Hawai'i) Ivan Jesus Martinez Soler (IFT, Madrid) Kimihiro Okumura (ICRR, University of Tokyo) Orlando L.G. Peres (UNICAMP) Amitava Raychaudhuri (Calcutta University) Soebur Razzaque (Johannesburg University) Carsten Rott (Sungkyunkwan University) Jordi Salvado (ECM, Barcelona University) Ina Sarcevic (University of Arizona) Thomas Stuttard (University College London) Volodymyr Takhistov (UCLA) Walter Winter (DESY, Zeuthen) Scientific Advisory Committee: John F. Beacom (Ohio State University) Paschal A. Coyle (CPPM, Marseille) Amol S. Dighe (TIFR, Mumbai) Thomas K. Gaisser (University of Delaware) Francis L. Halzen (University of Wisconsin-Madison) Takaaki Kajita (ICRR, University of Tokyo) Edward T. Kearns (Boston University) Eligio Lisi (INFN, Bari) John G. Learned (University of Hawai'i) Naba Kumar Mondal (SINP, Kolkata) Michele Maltoni (IFT, Madrid) Orlando L. G. Peres (Campinas State University) Ina Sarcevic (University of Arizona) Walter Winter (DESY, Zeuthen) NOTE: Invited Speakers do not need to apply online. There is no Registartion Fee for this activity. ICTP ICTP pio@ictp.it 28 May 2018 - 1 Jun 2018

Europe/Rome 2018-06-18 08:00:00 2018-06-29 22:00:00 1st Joint ICTP-Trieste/ICTP-SAIFR School on Particle Physics | (smr 3220) In 2018, Run II of the LHC will be well under way, and it will be important to assess what has been learned, as well as to discuss the directions in which the field might move in the near-term and medium-term future. The school will therefore be largely focused on LHC Physics, but without forgetting other areas that can give complementary information regarding the nature of the physics at the TeV scale. Following the tradition of the Summer Schools on Particle Physics at the ICTP in Trieste, the school aims at giving a detailed overview of particle physics, and covering important areas where recent progress has been made in the field. We will have at most three lectures per day, giving ample time for discussion and problem solving by the students. We will also encourage students to give short presentations on their research. There is no registration fee and limited funds are available for travel and local expenses.   <div class="tabcontent responsive-tabs__panel responsive-tabs__panel--active" id="tablist1-panel2" role="tabpanel" style="display: block;"> First week: Lectures on the Standard Model: Benjamin Grinstein (UCSD, USA) Practical QCD at Colliders: Giulia Zanderighi (University of Oxford, UK) Particle Physics and the Early Universe: Laura Covi (Institute for Theoretical Physics – Göttingen, Germany) Second week: Lectures on Beyond the Standard Model Physics: Alex Pomarol (IFAE, Spain) Dark Matter and Particle Physics: Paddy Fox (FERMILAB, USA) Experimental Elements for Theorists: A Roadmap to the Future: Gustaaf Brooijmans (Columbia University, USA) The link to the activity webpage for registration and further information is: http://www.ictp-saifr.org/?page_id=16149   Sao Paulo - Brazil ICTP pio@ictp.it 18 Jun 2018 - 29 Jun 2018

Europe/Rome 2018-06-18 08:00:00 2018-06-29 22:00:00 Summer School on Cosmology 2018 | (smr 3213) The purpose of the School is to provide an introduction to the current state of research in cosmology and astroparticle physics. It is intended for beginning graduate students, as well as more senior non-expert researchers that are interested in these fields. TOPICS & LECTURERS:   CMB, E. Komatsu (MPA, Garching & Kavli IPMU, Tokyo) DARK ENERGY, C. De Rham (Imperial College) DARK MATTER, F. D'Eramo (Padua University) GRAVITATIONAL WAVES I, S. Babak (APC, Paris) GRAVITATIONAL WAVES II, V. Cardoso (Lisboa University) INFLATION, M. Kleban (NYU) LARGE SCALE STRUCTURE I, R. Sheth (UPenn) LARGE SCALE STRUCTURE II, L. Senatore (Stanford University and SLAC) NOTE: The School will be followed by a 'Conference on Shedding Light on the Dark Universe with Extremely Large Telescopes' (smr3218, 2 - 6 July). ICTP ICTP pio@ictp.it 18 Jun 2018 - 29 Jun 2018