The IFT Severo Ochoa includes a strategic Excellence Visitor Program, with a number of IFT Severo Ochoa Distinguished Professor visiting positions awarded to internationally recognized world-leading scientists in the fields of Particle Physics, Astroparticles, Cosmology and Quantum Information. The aim of this program is to bolster collaborations of IFT teams with these international leaders and their institutions, and to enrich the IFT stimulating atmosphere through their visits.

#### Prof. Luis Álvarez-Gaumé

##### Simons Center for Geometry and Physics, Stony Brook

Prof. Álvarez-Gaumé is a world-renowned expert in string theory, quantum field theory, especially supersymmetric theories, and mathematical physics. His contributions pioneered the study of gauge and gravitational quantum anomalies in terms of topological index theorems. His work spans a range of different subjects, including string perturbation theory at higher orders, quantum field theories on Riemann surfaces, quantum groups, as well as dualities and black holes in string theory. He was Head of the CERN Theory group in 2008-15, and Director of the Simons Center for Geometry and Physics since 2016.

#### Prof. Nima Arkani-Hamed

##### Institute for Advanced Study, Princeton

Prof. Arkani-Hamed is one of the leading particle physics phenomenologists of his generation, in the interface between theory and experiment. His research has pioneered many approaches to Physics beyond the Standard Model, including the proposal of large extra dimensions, or the constraints on low-energy physics from UV completions of Quantum Gravity. His recent work explores the fundamental properties of scattering amplitudes in quantum theories using on-shell formulations. He has receives multiple awards, including the European Physical Society, Gribov Medal 2003, the Raymond and Beverly Sackler Prize in Physics 2008, and the Fundamental Physics Prize 2012.

#### Prof. Juan Ignacio Cirac

##### Max Plank Institute of Quantum Optics, Garching

Prof. Cirac is one of the pioneers of the field of quantum computing and quantum information theory. His joint work with Peter Zoller on ion trap quantum computation opened up the possibility of experimental quantum computation, and his joint work on optical lattices jump started the field of quantum simulation. He has also made seminal contributions in the field of degenerated quantum gases, quantum optics and many body physics. Ignacio Cirac has been granted multiple awards, among them the 2006 Prince of Asturias Award, the BBVA Foundation Frontiers of Knowledge Award in the Basic Sciences category ex aequo with Peter Zoller, and The Franklin Institute’s 2010 Benjamin Franklin Medal in Physics (jointly with David J. Wineland and Peter Zoller), and the Wolf Prize in Physics with Peter Zoller in 2013. Since 2001 he has been the Director of the Theoretical Division of the Max Planck Institute of Quantum Optics in Garching, Germany.

#### Prof. Georgi Dvali

##### LMU Munich

Prof. Dvali is a world-renowned theoretical particle physicist. Among his many contributions stand his pioneering works on Large Extra Dimensions and Modified Gravity. Prof. Dvali is a recipient of the New York City Mayor’s Award for Excellence in Science and Technology. He has held a David and Lucille Packard Fellowship and an Alfred P. Sloan Fellowship. In 2009, he was awarded an Alexander von Humboldt Professorship and was appointed to the Chair of Theoretical Particle Physics at LMU’s Arnold Sommerfeld Center for Theoretical Physics. He is also a Director of the Max Planck Institute for Physics in Munich and holds a Silver Professorship Chair at New York University.

#### Prof. Graciela Gelmini

##### University of California Los Angeles

Prof. Gelmini is a world-recognized expert on Astroparticle physics, a field in which she has made major contributions in the study of high-energy cosmic rays in the Physics of neutrinos, and specially in the question of the nature of cosmological dark matter, including the analysis of potential particle candidates and their observation in direct detection experiments. She is also a prominent member of the Aspen Center for Physics as Chair of the Committee for Participant Diversity. In 2004 she was recognized as Fellow of the American Physical Society.

#### Prof. Renata Kallosh

##### Stanford University

Prof. Kallosh is a world-leader in the study of Supergravity theories. She has made crucial contributions both at a fundamental level, including her works on quantum supergravity, and at the applications to Cosmology, black-hole physics and to the low-energy description of string theory vacua. She has received several awards for her pioneering contributions such as the Humboldt International Research Award (2005-2008) and the Lise Meitner prize of Göteborg University and Chalmers (2009) “for pioneering contributions to theoretical physics and cosmology which led to the construction of models of accelerated expansion of the universe in string theory”.

#### Prof. Dmitri Kharzeev

##### Stony Brook University

Prof. Kharzeev is professor of physics at Stony Brook University and a senior scientist at Brookhaven National Laboratory. His research interests include quantum field theory, nuclear physics, condensed matter physics and quantum optics. His ideas are theoretical driving forces that lead to a better understanding of exotic new states of matter, such as the quark gluon plasma. He is proponent of the idea of a “big synthesis” in which the artificial boundaries between the sub-fields of physics and natural sciences in general begin to disappear revealing the deep connections between the phenomena that occur on vastly different scales – from femto-meter to parsecs. As such his research reaches out into the fields of condensed matter physics, nano-technology and quantum optics. Amongst many other things this broad interest in research is reflected by the facts that he holds a Humboldt award for predicting the “chiral magnetic effect” in the quark gluon plasma and the US patent 20100109712 on Graphene-Magnet Multilayers (GMMs).

#### Prof. Andrei Linde

##### Stanford University

Prof. Linde is a world reference in Cosmology, with seminal contributions to the modern development of the field. He is one of the fathers of Inflation, of the theory of cosmological phase transitions, and of the idea of an eternal inflationary multiverse. He has received prestigious prizes as the 2002 Dirac Medal, the 2004 Gruber Cosmology Prize for the development of inflationary cosmology and the 2012 Fundamental Physics Prize. In 2014, he was a co-recipient of the Kavli Prize awarded by the Norwegian Academy of Science and Letters with Alan Guth and Alexei Starobinsky. He is a member of the National Academy of Sciences of the USA and of the American Academy of Arts and Sciences.

#### Prof. Luciano Maiani

##### University of Roma, La Sapienza

Prof. Maiani is a world reference in Particle Physics, with essential contributions like the Glashow-Iliopoulos-Maiani (GIM) mechanism leading to the prediction of the charm quark and crucial for formulating the unification of the electroweak interactions. He has received prestigious prizes as the 1987 Sakurai Prize and the 2007 Dirac Medal. He has been President of the Instituto Nazionale di Fisica Nucleare (INFN) in Italy from 1993 to 1998, and Director General at CERN from 1999 to 2003. He has received prestigious prizes as the 1979 Matteucci Medal, the 1987 Sakurai Prize and the 2007 Dirac Medal. In 2011 he received the High Energy and Particle Physics Prize of the European Physical Society and in 2015 the Pontecorvo Prize.

#### Prof. Aneesh Manohar

##### University of California, San Diego

Prof. Manohar is an international leader in Effective Field Theories and their application to Particle Physics. He has produced outstanding contributions in the areas of Heavy Quark Effective Theory (inclusive decays, radiative corrections, and the upsilon expansion), in the the application of Chiral Perturbation Theory to the study of baryons, in the 1/N expansion to systematically analyze the spin-flavour symmetry structure of baryons, and in renormalization of Non-relativistic Effective Theories. He was awarded the prestigious Friedrich Wilhelm Bessel Research Award for 2004 from the Humboldt foundation in Germany.

#### Prof. Viatcheslav Mukhanov

##### Arnold Sommerfeld Center for Theoretical Physics, LMU

Prof. Mukhanov holds the Chair of Cosmology at the Ludwig-Maximilians-Universität in Munich. He is one of a select group of researchers who have made significant contributions to the theory of cosmic inflation. In 1980–81, together with G. Chibisov, he discovered that quantum fluctuations could be responsible for the large-scale structure of the universe. They calculated the spectrum of fluctuations in a model with a quasi-exponential stage of expansion, later known as inflation, in very good agreement with recent measurements of the CMB fluctuations. He has received numerous awards, the Gold Medal of the Soviet Academy of Sciences, the Oskar Klein Medal, and in 2015 the Max Planck Medal. He has received the Chaire Blaise Pascal, a prestigious distinction awarded by the French Government, the Tomalla Prize by the Swiss Tomalla Foundation for Gravity Research, and the Amaldi Medal of the Italian Society for General Relativity. In 2013 he was awarded, with A. Staorbinsky, the Gruber Prize in Cosmology.

#### Prof. Herbert Neuberger

##### Rutgers University

Prof. Neuberger is a world-recognized expert on the formal and numerical aspects of Quantum Field Theory. His many contributions have enlightened our understanding of strongly coupled processes in quantum field theories in general and in Quantum Chromodynamics, the theory of the strong interaction, in particular. He has solved a long-standing problem concerning the formulation of massless fermions on a lattice, a result that has opened the path to a rigurous non-perturbative treatment of chiral symmetry. He has also done important contributions to the understanding of Yang-Mills theories in the limit of a large number of colours. He is Professor of Physics at Rutgers University and has received distinguished awards as the John Simon Guggenheim Memorial Foundation Fellowship for Natural Sciences in 2001, and the Alexander von Humboldt Foundation Award in 2006. In 2001 he was nominated fellow of the American Physical Society.

#### Prof. Alexei Smirnov

##### MPIK, Heidelberg & ICTP, Trieste

Prof. Smirnov is a leading authority in the field of neutrino physics. He is mostly known for his contribution to the understanding of neutrino propagation through matter (Mikheyev-Smirnov-Wolfenstein effect), which represented a major step towards the solution of the solar neutrino problem. His awards and honors include the Biedenharn endowed chair in physics (University of Texas, Austin, 2002), the award of the Japanese Society for promotion of science (2004), the Alexander von Humboldt research award (2004), the Erwin Schrödinger guest professorship (Vienna, 2007), and the Centennial Markov Prize (Moscow, 2008).