Participation is by invitation only. All participants must register.
Nima Arkani-Hamed, Institute for Advanced Study
Daniel Baumann, University of Amsterdam
John Joseph Carrasco, Northwestern University and The Institute for Theoretical Physics (IPhT, CEA-Saclay)
Daniel Green, University of California, San Diego
Cosmology is both source and arbiter of some of the biggest questions in physics, such as the origin and fate of space and time, as well as the nature and evolution of everything within it. Precise observations of the cosmic microwave background and the large-scale structure of the universe have recently brought these questions into sharp focus. Although there is growing evidence that the primordial fluctuations originated from quantum fluctuations during a period of inflation, the physics of inflation remains a mystery.
Moreover, while there have been significant theoretical advances in our understanding of cosmological correlation functions, it remains challenging to isolate fundamental physics from these correlators. In particular, we don’t know the precise rules that cosmological correlators have to obey, so that, naively, it
might seem that anything goes.
This is to be contrasted with the observation that the laws of physics are a nearly inevitable consequence of quantum mechanics and special relativity. Nowhere is this seen more clearly than in the invariant observables associated with scattering amplitudes in asymptotically flat space. If cosmology is a source of ultimate questions, scattering theory can be thought of as a source of ultimate answers. Demanding only the minimal criteria of self-consistency, scattering theory has recently discovered a variety of often radically simpler ways to frame, extract, and unify predictions from physical theories. Generalizing from the relative security of flat spacetime to confront cosmological challenges provides a spectacular opportunity to stretch the applicability and reach of the S-matrix framework’s greatest ambitions.
The Simons Symposium on Amplitudes meet Cosmology will bring experts from the cosmology and scattering amplitudes communities together, at this critical time, to share their key insights and challenges, in order to synthesize their complementary perspectives. Through a series of organized discussions, the goal of the symposium is to identify a set of precise questions against which shared progress can be measured jointly in both communities. For example, we will discuss what progress will mean in the inflationary context and how this might shape collaborations at the boundaries of both fields.
8:30 - 9:30 PM Dinner at La Salle
7:30 - 9:45 AM Breakfast at La Salle 10:00 - 11:00 AM Nima Arkani-Hamed | Amplitudes Meet Cosmology (O)* 11:00-11:30 AM Break 11:30 - 12:30 PM Nima Arkani-Hamed | Amplitudes Meet Cosmology (O) 12:30 - 1:30 PM Lunch at La Salle 1:30 - 4:30 PM Discussion & Recreation* 4:30- 5:00 PM Tea 5:00 - 6:00 PM Matias Zaldarriaga | Cosmology Goals (O) 6:00 - 6:15 PM Break 6:15 - 7:15 PM Zvi Bern | Amplitudes Goals (O) 8:00 - 9:30 PM Dinner: Ganesha Restaurant in the Retreat
7:30 - 9:45 AM Breakfast at La Salle 10:00 - 11:00 AM Daniel Baumann | Bootstrapping Cosmology (O) 11:00-11:30 AM Break 11:30 - 12:30 PM Radu Roiban | From Amplitudes to Correlators (O) 12:30 - 1:30 PM Lunch at La Salle 1:30 - 4:30 PM Discussion & Recreation* 4:30- 5:00 PM Tea 5:00 - 6:00 PM John-Joseph Carrasco | Loops in Amplitudes and Cosmology (D) 6:00 - 6:15 PM Break 6:15 - 7:15 PM Anastasia Volovich | IR Structure in Cosmology and Amplitudes (D) 8:00 - 9:30 PM Dinner
7:30 - 9:30 AM Breakfast 9:45 - 2:00 PM Guided Hike to Partnach Gorge 2:00 - 3:00 PM Lunch at Ganesha Restaurant in the Retreat 3:00 - 4:30 PM Recreation & Discussion 4:30 - 5:00 PM Tea 5:00 - 6:00 PM Paolo Benincasa & Lionel Mason | Amplitudes Beyond Flat Space (O) 6:00 - 6:15 PM Break 6:15 - 7:15 PM TBA 8:00 - 9:30 PM Dinner
7:30 - 9:45 AM Breakfast at La Salle 10:00 - 11:00 AM Tom Hartman | Insights from the Conformal Bootstrap (O) 11:00-11:30 AM Break 11:30 - 12:30 PM Henrik Johansson & Donal O'Connell | Opportunities of the Double Copy (O) 12:30 - 1:30 PM Lunch at La Salle 1:30 - 4:30 PM Discussion & Recreation* 4:30- 5:00 PM Tea 5:00 - 6:00 PM Kurt Hinterbichler & Rachel Rosen | Sum Rules and Positivity (D) 6:00 - 6:15 PM Break 6:15 - 7:15 PM Yu-tin Huang & Rafael Porto | Amplitudes Meet Classical Gravity (D) 8:00 - 9:30 PM Dinner
7:30 - 9:45 AM Breakfast at La Salle 10:00 - 11:00 AM Liam McAllister | Challenges in De Sitter (O) 11:00-11:30 AM Break 11:30 - 12:30 PM Mina Arvanitaki & Dick Bond | Future Observations (O) 12:30 - 1:30 PM Lunch at La Salle 1:30 - 4:30 PM Discussion & Recreation* 4:30- 5:00 PM Tea 5:00 - 6:00 PM Lance Dixon | Next Steps: Amplitudes (D) 6:00 - 6:15 PM Break 6:15 - 7:15 PM Daniel Green | Next Steps: Cosmology (D) 8:00 - 9:30 PM Dinner: Kaminstüberl Fondue Restaurant
SESSIONS Pavilion located at the Schloss Elmau Retreat MEALS La Salle unless otherwise noted TEA & DISCUSSION Pavilion located at the Schloss Elmau Retreat EXCURSION Meet in Schloss Elmau Lobby SATURDAY DEPARTURE Meet in Schloss Elmau Lobby (O) Overview (D) Discussion
*Participants may explore the hotel property and its surrounding areas as well as engage in informal discussion with other participants.
Nima Arkani-Hamed Institute for Advanced Study Mina Arvanitaki Perimeter Institute Daniel Baumann University of Amsterdam Paolo Benincasa Niels Bohr Institute Zvi Bern University of California, Los Angeles Dick Bond CITA John-Joseph Carrasco Northwestern University and The Institute for Theoretical Physics Lance Dixon SLAC Daniel Green University of California, San Diego Tom Hartman Cornell University Kurt Hinterbichler Case Western Reserve University Yu-tin Huang National Taiwan University Henrik Johansson Uppsala & Nordita Lionel Mason Oxford University Liam McAllister Cornell University Donal O’Connell University of Edinburgh Enrico Pajer University of Cambridge Rafael Porto University of Hamburg Radu Roiban Penn State University Rachel Rosen Columbia University Anastasia Volovich Brown University Matias Zaldarriaga Institute for Advanced Study
Participants will have access to a projector and screen for computer-based talks and blackboards for those who prefer to give board-based talks.
High-speed Internet access is available.
On Wednesday symposium activities are shortened for a guided hiking tour from Schloss-Elmau through the Partnach Gorge. The hike difficulty is moderate and will take approximately 3 hours.
If you will participate in the hike, hiking boots or shoes appropriate for traversing rocky/wet terrain, warm clothing (e.g. a sweater), sun protection (e.g. light cap) and waterproofs (e.g. raincoat or umbrella) are strongly recommended.
A small satchel containing a light snack and water is provided, but feel free to bring your own backpack in which to carry a camera and other items that may be useful to you.
The foundation will coordinate and purchase air and train travel to the symposium. Travel specifications can be provided by clicking the registration link above.
Participants arriving via plane will arrive via Munich International Airport (MUC) Airport.
The closet train station to Schloss Elmau is in Klais. Those traveling by train should book their tickets directly and request reimbursement at the conclusion of the meeting. Should you require booking assistance, please contact Meghan Fazzi.
All participants are required to arrive on Sunday prior to the meeting’s start and attend the entire week. No accommodations will be made for partial participation.
Passports are required.
Local Ground Transportation
Arrival at Munich International Airport
The foundation will arrange for your transfer from MUC airport to Schloss Elmau via a private car. After claiming your luggage at baggage claim you will proceed through customs and to the exit where a uniformed driver holding a Simons Symposia sign will greet you.
Travel time from Munich to Schloss Elmau is 90 minutes.
Arrival at Klais Train Station
The foundation will arrange for your transfer from Klais train station to Schloss Elmau via a hotel shuttle.
Travel time from Klais to Elmau is approximately 10 minutes.
Departure from Schloss Elmau
The day prior to your departure you will receive a departure letter advising on your departure time to the airport or train station via private car. Please meet your driver in the hotel lobby ten minutes prior to your noted departure time. If for any reason your flight departure time changes, please visit the front desk to update hotel staff.
Schloss Elmau Luxury Spa & Cultural Hideaway
In Elmau 2, 82493 Krün
Tel: +49 (0) 8823 18-0
Check-in time is at 4:30 PM
Check-out time is 11:30 AM
Additional Night at Elmau
The meeting concludes on Friday evening. Participants have the option to depart on Saturday following the conclusion of the meeting or depart on Sunday at no additional cost. Please note your desired departure date when registering.
Business casual clothing should be worn during the symposium.
The weather can change very quickly; please bring cold-weather clothing appropriate for spring in the mountains.
Sunday and Saturday: Meals on arrival and departure days (including while traveling) are reimbursable by the foundation. Your meals on these days are not to exceed $115 USD.
Monday through Friday: All meals occurring during the meeting week will be covered directly by the Simons Foundation. Participants are expected to be present for all foundation-hosted meals.
Breakfast is served starting at 7:30 AM at La Salle restaurant. Food at La Salle is served buffet-style and is open to all hotel guests; tables are reserved for all symposium participants so that the group may dine together.
Lunch is served daily at La Salle.
Dinner is hosted around the hotel property at one of the restaurants. Locations are noted on the agenda.
Reimbursement and Travel Policy
Any expenses not directly paid for by the Simons Foundation are subject to reimbursement based on the travel policy. Please review the policy and complete when submitting your expenses. Receipts are required for any expenses over $50 USD and are due within THIRTY DAYS (30) after the conclusion of the symposium. All expenses are reconciled through the foundation’s online reimbursement platform. Additional information regarding reimbursement is sent via email on the final day of the symposium.
Should you have any questions, please contact Meghan Fazzi.
It is the foundation’s policy to discourage spouses, families or others from joining participants during the meeting. Participants who choose to invite guests to come before or stay on after the meeting do so at their own expense. The Simons Foundation will not cover expenses associated with such extensions.
Should you decide to extend your stay, Schloss Elmau will honor the conference rate of €337.50/night for up to two nights. Any nights beyond those associated with the conference are not reimbursable by the foundation.
Please note on your registration form if you wish to extend your stay.