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String Theory & Cosmology
Gordon Research Conference

New Ideas Meet New Experimental Data

Dates

May 31 - June 5, 2015

Location

The Hong Kong University of Science and Technology
Hong Kong, China

Organizers

Chair:
Gary Shiu

Vice Chair:
Ulf Danielsson

Meeting Description

This is the golden age of cosmology. Once a philosophical subject, cosmology has burgeoned into a precision science as ground and space-based astronomical observations supply a wealth of unprecedently precise cosmological measurements. Questions that were recently the stuff of speculation can now be analyzed in the context of rigorous, predictive theoretical frameworks whose viability is determined by observational data. To address key questions about our universe, especially at the energy scales characteristic of its earliest moments, one must invoke a theory of quantum gravity, such as string theory. Conversely, observational cosmology is our most promising window for testing fundamental theories at ultra-high energies.

This new Gordon Research Conference will explore this important synergistic interface between cosmology and string theory. The increasingly precise measurements of the cosmic microwave background, new results from large scale structure surveys, and the diverse dark matter/dark energy probes continue to unveil the fundamental laws of Nature. More new results are scheduled to release in the next two years. On the other hand, there has recently been tremendous progress in understanding cosmological solutions in superstring and supergravity theories, string compactifications and their consequences for moduli stabilization and inflation, and embedding dark energy in string theory. Furthermore, superstring theory may naturally provide answers to some of the most profound questions in cosmology. This includes questions concerning the initial big bang singularity, why there are three large spatial dimensions, the observed homogeneity and the flatness of the universe, the small fluctuations embedded in the cosmic microwave background radiation, candidates for the cold dark matter, the cosmological constant and the late time acceleration. Our aim is to promote discussion between cosmologists and string theorists, and we hope that this conference will fuse ideas from these two foundations of theoretical physics. This conference will bring together world leading experts to stimulate further in-depth study in this field as well as the close collaboration among the conference participants in the future. The conference will be multi-disciplinary in nature, covering a wide range of expertise in the intersections of cosmology and string theory, and discuss the connection between theory and experiment. We hope that this conference can serve as a platform for further developments in education, science and technology in this growing area. China has become a competitive partner in fundamental physics research, as demonstrated in, e.g., the recent discovery of a new type of neutrino transformation by the Daya Bay experiment near Hong Kong. A Joint Consortium for Fundamental Physics has recently been formed among the three main universities in Hong Kong to promote this new initiative. Hence, this Gordon Research Conference will be held in Hong Kong, the gate of China and a meeting point of East and West, and hence an ideal place to coordinate world-wide activities in the field.

Contributors

Final Meeting Program

Sunday
2:00 pm - 8:00 pmArrival and Check-in
6:00 pmDinner
7:30 pm - 7:40 pmWelcome / Introductory Comments by GRC Site Staff
7:40 pm - 9:30 pmThe Scientific Base for String Cosmology
Discussion Leader: Gary Shiu (The Hong Kong University of Science and Technology, Hong Kong SAR China)
7:40 pm - 7:50 pmOpening Remarks
7:50 pm - 8:30 pmSlava Mukhanov (Arnold Sommerfeld Center for Theoretical Physics, Germany)
"The Case for String Cosmology: A View from Cosmology"
8:30 pm - 8:40 pmDiscussion
8:40 pm - 9:20 pmEva Silverstein (SLAC National Accelerator Laboratory, Stanford University, USA)
"The Case for String Cosmology: A View from String Theory"
9:20 pm - 9:30 pmDiscussion
Monday
7:30 am - 8:30 amBreakfast
9:00 am - 12:30 pmExperiments and Phenomenology
Discussion Leader: Ulf Danielsson (Uppsala University, Sweden)
9:00 am - 9:30 amBen Wandelt (Lagrange Institute / Paris Institute for Astrophysics, France)
"Results from the Planck Experiment"
9:30 am - 9:40 amDiscussion
9:40 am - 10:10 amMasashi Hazumi (KEK / Kavli IPMU / SOKENDAI, Japan)
"LiteBIRD"
10:10 am - 10:20 amDiscussion
10:20 am - 10:50 amGroup Photo / Coffee Break
10:50 am - 11:20 amXuelei Chen (National Astronomical Observatories, China)
"The Tianlai Experiment: Probing Dark Energy with Redshifted 21cm Observation"
11:20 am - 11:30 amDiscussion
11:30 am - 11:45 amQing-Guo Huang (Institute of Theoretical Physics, CAS, China)
"Gravitational Wave: A Probe into the Physics in the Early Universe"
11:45 am - 11:50 amDiscussion
11:50 am - 12:05 pmPieter Meerburg (Canadian Institute for Theoretical Astrophysics, Canada)
"Fundamental Features in the Bispectrum"
12:05 pm - 12:10 pmDiscussion
12:10 pm - 12:25 pmMasahide Yamaguchi (Tokyo Institute of Technology, Japan)
"Probing Small-Scale Non-Gaussianity from Anisotropies in Acoustic Reheating"
12:25 pm - 12:30 pmDiscussion
12:30 pmLunch
1:30 pm - 4:00 pmFree Time
4:00 pm - 6:00 pmPoster Session
6:00 pmDinner
7:30 pm - 9:30 pmInflation and Alternatives
Discussion Leader: Misao Sasaki (Kyoto University, Japan)
7:30 pm - 7:55 pmBurt Ovrut (University of Pennsylvania, USA)
"Cosmological Perturbations Through a Non-Singular Ghost-Condensate/Galileon Bounce"
7:55 pm - 8:00 pmDiscussion
8:00 pm - 8:25 pmPisin Chen (National Taiwan University, Taiwan)
"What Initial Condition of Inflation Would Suppress the Large Scale CMB Spectrum?"
8:25 pm - 8:30 pmDiscussion
8:30 pm - 8:55 pmJun'ichi Yokoyama (University of Tokyo, Japan)
"Galilean Creation of the Inflationary Universe"
8:55 pm - 9:00 pmDiscussion
9:00 pm - 9:10 pmMingzhe Li (Interdisciplinary Center for Theoretical Study, University of Science and Technology of China, China)
"Scale-Invariant Primordial Perturbations from Bouncing Universe"
9:10 pm - 9:15 pmDiscussion
9:15 pm - 9:25 pmTaro Kunimitsu (RESCEU, University of Tokyo, Japan)
"Large Tensor Mode, Field Range Bound and Consistency in Generalized G-Inflation"
9:25 pm - 9:30 pmDiscussion
Tuesday
7:30 am - 8:30 amBreakfast
9:00 am - 12:30 pmInflation from String Theory
Discussion Leader: Ivonne Zavala (Swansea University, United Kingdom)
9:00 am - 9:30 amLiam McAllister (Cornell University, USA)
"Inflation in String Theory: An Overview"
9:30 am - 9:35 amDiscussion
9:35 am - 10:05 amFernando Marchesano (Spanish National Research Council (CSIC), Spain)
"Building String Inflationary Models"
10:05 am - 10:10 amDiscussion
10:10 am - 10:40 amCoffee Break
10:40 am - 11:10 amPablo Soler (University of Wisconsin, Madison, USA)
"Natural Inflation and the Weak Gravity Conjecture"
11:10 am - 11:15 amDiscussion
11:15 am - 11:25 amDaniel Junghans (LMU Munich, Germany)
"Large-Field Inflation with Multiple Axions and the Weak Gravity Conjecture"
11:25 am - 11:30 amDiscussion
11:30 am - 11:40 amAnder Retolaza (The Institute for Theoretical Physics UAM / Spanish National Research Council (CSIC), Spain)
"Bifid Throats for Axion Monodromy Inflation"
11:40 am - 11:45 amDiscussion
11:45 am - 11:55 amWieland Staessens (The Institute for Theoretical Physics UAM / Spanish National Research Council (CSIC), Spain)
"Inflation in the Time of Mixing Axions"
11:55 am - 12:00 pmDiscussion
12:00 pm - 12:10 pmDaniela Herschmann (Max Planck Institute for Physics, Germany)
"Moduli Stabilisation and Axion Inflation in Type IIB String Theory"
12:10 pm - 12:15 pmDiscussion
12:15 pm - 12:25 pmYoske Sumitomo (KEK, Japan)
"Accidental Kähler Moduli Inflation"
12:25 pm - 12:30 pmDiscussion
12:30 pmLunch
1:30 pm - 4:00 pmFree Time
4:00 pm - 6:00 pmPoster Session
6:00 pmDinner
7:30 pm - 9:30 pmString Theory Landscape
Discussion Leader: Lilia Anguelova (Institute for Nuclear Research and Nuclear Energy, Bulgaria)
7:30 pm - 7:55 pmBert Schellekens (National Institute for Subatomic Physics (NIKHEF), The Netherlands)
"Towards a Derivation of the Standard Model"
7:55 pm - 8:00 pmDiscussion
8:00 pm - 8:25 pmYasunori Nomura (University of California, Berkeley, USA)
"The Quantum Multiverse"
8:25 pm - 8:30 pmDiscussion
8:30 pm - 8:55 pmThomas Van Riet (Institute for Theoretical Physics, K.U. Leuven, Belgium)
"Challenges for the String Theory Landscape"
8:55 pm - 9:00 pmDiscussion
9:00 pm - 9:25 pmGabriele Honecker (Johannes Gutenberg University Mainz, Germany)
"From Stringy Particle Physics Models Towards Cosmology"
9:25 pm - 9:30 pmDiscussion
Wednesday
7:30 am - 8:30 amBreakfast
9:00 am - 12:30 pmDark Matter and Dark Energy
Discussion Leader: Satoshi Iso (KEK, Japan)
9:00 am - 9:30 amHitoshi Murayama (University of California, Berkeley / Kavli IPMU / University of Tokyo, Japan)
"Dark Matter Theory"
9:30 am - 9:35 amDiscussion
9:35 am - 10:05 amJohn Ellis (Kings College London / CERN, Switzerland)
"A Survey of the Experimental Status of Dark Matter"
10:05 am - 10:10 amDiscussion
10:10 am - 10:40 amCoffee Break
10:40 am - 11:10 amEnrico Pajer (Utrecht University, The Netherlands)
"Effective Field Theory of Large Scale Structure"
11:10 am - 11:15 amDiscussion
11:15 am - 11:45 amSonia Paban (University of Texas at Austin, USA)
"Tunneling in Theories with Many Fields"
11:45 am - 11:50 amDiscussion
11:50 am - 12:05 pmAmol Upadhye (University of Wisconsin, Madison, USA)
"Redshift-Space Distortions in Massive Neutrino and Evolving Dark Energy Cosmologies"
12:05 pm - 12:10 pmDiscussion
12:10 pm - 12:25 pmChunshan Lin (Yukawa Institute for Theoretical Physics, Kyoto University, Japan)
"The Resonant Amplification of Primordial Gravitational Waves"
12:25 pm - 12:30 pmDiscussion
12:30 pmLunch
1:30 pm - 4:00 pmFree Time
4:00 pm - 6:00 pmPoster Session
6:00 pmDinner
7:00 pm - 7:30 pmBusiness Meeting
Nominations for the Next Vice Chair; Fill in Conference Evaluation Forms; Discuss Future Site and Scheduling Preferences; Election of the Next Vice Chair
7:30 pm - 9:30 pmFurther Probes of Our Universe
Discussion Leader: Jan Pieter van der Schaar (University of Amsterdam, The Netherlands)
7:30 pm - 8:00 pmNeal Dalal (University of Illinois at Urbana-Champaign, USA)
"Using ALMA to Probe Small Scale Structure"
8:00 pm - 8:10 pmDiscussion
8:10 pm - 8:40 pmUros Seljak (University of California, Berkeley, USA)
"LSS Theoretical and Modeling Challenges"
8:40 pm - 8:50 pmDiscussion
8:50 pm - 9:20 pmDavid Chernoff (Cornell University, USA)
"Searching for Nearby Cosmic Superstrings"
9:20 pm - 9:30 pmDiscussion
Thursday
7:30 am - 8:30 amBreakfast
9:00 am - 12:30 pmFundamentals
Discussion Leader: Piljin Yi (Korea Institute for Advanced Study, South Korea)
9:00 am - 9:30 amSavdeep Sethi (University of Chicago, USA)
"A Landscape of Field Theories"
9:30 am - 9:40 amDiscussion
9:40 am - 10:10 amEric Bergshoeff (University of Groningen, The Netherlands)
"The Volkov-Akulov Action, the Anti D3-Brane and Spontaneously Broken Supersymmetry"
10:10 am - 10:15 amDiscussion
10:15 am - 10:45 amCoffee Break
10:45 am - 11:15 amJoseph Conlon (Oxford University, United Kingdom)
"String Theory, Axions and Galaxy Clusters"
11:15 am - 11:20 amDiscussion
11:20 am - 11:35 amAnshuman Maharana (Harish Chandra Research Institute, India)
"Inflation, Moduli and the CMB"
11:35 am - 11:40 amDiscussion
11:40 am - 11:55 amJinn-Ouk Gong (Asia Pacific Center for Theoretical Physics, South Korea)
"A New Parameter in Attractor Single-Field Inflation"
11:55 am - 12:00 pmDiscussion
12:00 pm - 12:10 pmMinxin Huang (University of Science and Technology of China, China)
"A New Exact Quantization Condition for Toric Calabi-Yau Geometries"
12:10 pm - 12:15 pmDiscussion
12:15 pm - 12:25 pmZheng Sun (Sichuan University, China)
"Landscape for Hierarchy"
12:25 pm - 12:30 pmDiscussion
12:30 pmLunch
1:30 pm - 4:00 pmFree Time
4:00 pm - 6:00 pmProspects and Outlook
Discussion Leader: Henry Tye (The Hong Kong University of Science and Technology, Hong Kong SAR China)
4:00 pm - 4:30 pmLam Hui (Columbia University, USA)
"Symmetries in Large Scale Structure"
4:30 pm - 4:35 pmDiscussion
4:35 pm - 5:05 pmKoenraad Schalm (Leiden University, The Netherlands)
"On the Infrared Structure of Gravity"
5:05 pm - 5:10 pmDiscussion
5:10 pm - 5:50 pmNima Arkani-Hamed (Institute for Advanced Study, USA)
"Cosmological Collider Physics"
5:50 pm - 6:00 pmDiscussion
6:00 pmDinner
Friday
7:30 am - 8:30 amBreakfast
9:00 amDeparture

Any opinions, findings, conclusions or recommendations expressed in this material/event (or by members of the project team) do not reflect the views of the Government of the Hong Kong Special Administrative Region, the Innovation and Technology Commission or the Vetting Committee of the General Support Programme of the Innovation and Technology Fund.
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