Multi-Scale Physics (2025)

Date & Time


Location

Schloss Elmau
In Elmau 2, 82493 Krün Germany

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Invitation Only

Participation is by invitation only. All participants must register.

Organizers:
Eliot Quataert, Princeton University
Alex Schekochihin, University of Oxford
Laure Zanna, New York University

Meeting Goals:

A common problem facing a wide range of disciplines in the physical sciences is that phenomena at a diverse range of length and timescales are critical to the dynamics and time evolution of the system. For example, the densest objects in the Universe, black holes, are one of the largest sources of energy production in the formation of structure and influence the dynamics of the Universe on scales up to billions of times larger than the black hole itself. On the Earth and on the millions of exoplanets in our galaxy, the properties of small-scale turbulence in the atmosphere and ocean are critical for the atmospheric dynamics and the long-term evolution of the climate; and in laboratory fusion devices, small-scale turbulence regulates the temperature achievable in fusion devices, and thus the likelihood of self-sustaining fusion reactions.

The general challenge in multi-scale physics problems is that short length and time-scale phenomena impact the long length and time-scale behavior and vice-versa. The relevant physics, and indeed often even the relevant equations, needed to describe the system on these diverse scales can be quite different. This raises significant challenges both in principle (e.g., at the applied math level) and in practice (e.g., at the theoretical and computational level) regarding how to accurately model such systems. This challenge can be viewed as formulating an “effective field theory” for the system that correctly couples the dynamics across multiple length and time-scales, as has been successfully done in particle physics, condensed matter physics, and theories of large-scale structure.

The Simons Symposium on multi-scale physics will bring together experts in a range of disciplines that face these challenges, including astrophysics, climate science, plasma physics, oceanography, machine learning, applied math, and theoretical physics. By discussing the challenges facing each discipline and their methods for tackling multi-scale problems, we anticipate that community will learn techniques from the others, thus simultaneously advancing a wide range of disciplines.

  • Monday, June 9, 2025

    8:30 PMWelcome Dinner

    Tuesday, June 10, 2025

    7:30 - 9:45 AMBreakfast
    10:00 - 11:00 AMProgram
    11:00-11:30 AMBreak
    11:30 - 12:30 PMProgram
    12:30 - 1:30 PMLunch
    1:30 - 4:30 PMProgram
    4:30- 5:00 PMTea
    5:00 - 6:00 PMProgram
    6:00 - 6:15 PMBreak
    6:15 - 7:15 PMProgram
    8:00 - 9:30 PMDinner

    Wednesday, June 11, 2025

    7:30 - 9:45 AMBreakfast
    10:00 - 11:00 AMProgram
    11:00-11:30 AMBreak
    11:30 - 12:30 PMProgram
    12:30 - 1:30 PMLunch
    1:30 - 4:30 PMProgram
    4:30- 5:00 PMTea
    5:00 - 6:00 PMProgram
    6:00 - 6:15 PMBreak
    6:15 - 7:15 PMProgram
    8:00 - 9:30 PMDinner

    Thursday, June 12, 2025

    7:30 - 9:30 AMBreakfast
    9:45 - 2:00 PMGuided Hike
    2:00 - 3:00 PMLunch
    3:00 - 4:30 PMRecreation & Discussion
    4:30 - 5:00 PMTea
    5:00 - 6:00 PMProgram
    6:00 - 6:15 PMBreak
    6:15 - 7:15 PMProgram
    8:00 - 9:15 PMDinner

    Friday, June 13, 2025

    7:30 - 9:45 AMBreakfast
    10:00 - 11:00 AMProgram
    11:00-11:30 AMBreak
    11:30 - 12:30 PMProgram
    12:30 - 1:30 PMLunch
    1:30 - 4:30 PMProgram
    4:30- 5:00 PMTea
    5:00 - 6:00 PMProgram
    6:00 - 6:15 PMBreak
    6:15 - 7:15 PMProgram
    8:00 - 9:30 PMDinner

    Saturday, June 14, 2025

    7:30 - 9:45 AMBreakfast
    10:00 - 11:00 AMProgram
    11:00-11:30 AMBreak
    11:30 - 12:30 PMProgram
    12:30 - 1:30 PMLunch
    1:30 - 4:30 PMProgram
    4:30- 5:00 PMTea
    5:00 - 6:00 PMProgram
    6:00 - 6:15 PMBreak
    6:15 - 7:15 PMProgram
    8:00 - 9:30 PMDinner

    Sunday, June 15, 2025

    Departure
  • Funding

    All Simons Symposium participants are fully funded by the Simons Foundation. Funding includes roundtrip travel, hotel accommodations and reimbursement of local expenses.

    Participation & Guest Policy

    By confirming their participation, symposium attendees agree to participate fully in the scientific program, arriving on Monday, June 9 and departing on Sunday, June 15.

    No accommodations will be made for partial or remote attendance.

    It is against Simons Foundation policy for guests, including children, to accompany participants during the meeting week. Guests are welcome to join prior to or at the conclusion of the symposium at their own expense.

  • Air Travel

    The Simons Foundation will arrange and pay for round-trip travel from the attendee’s home city to the Munich International Airport within the following parameters:

    • Economy Class: For flights that are three hours or less to your destination, the maximum allowable class of service is Economy class.
    • Premium Economy Class: For flights where the total air travel time (excluding connection time) is more than three hours and less than seven hours per segment to your destination, the maximum allowable class of service is premium economy.
    • Business Class: When traveling internationally (or to Hawaii/Alaska) travelers are permitted to travel in Business Class on those segments that are seven hours or more. If the routing is over budget, a premium economy or mixed-class ticket will be booked.

    Train Travel

    Attendees requiring train travel inside Germany and/or Europe should be booked directly their tickets directly and request reimbursement of their fare at the end of the symposium.

    Local Train Stations

    Munich Central Station
    https://www.bahnhof.de/en/muenchen-hbf
    Distance from Schloss Elmau: 65 mi/105 km

    Garmisch-Partenkirchen Central Station
    https://www.bahnhof.de/en/garmisch-partenkirchen
    Distance from Schloss Elmau: 10 mi/17 km

    Klais Station
    https://www.bahnhof.de/en/klais
    Distance from Schloss Elmau: 3.5 mi/5.6 km

    Hotel

    The Simons Foundation will directly pay for up to 6 nights at Schloss Elmau Hotel, arriving on Monday, June 9 and departing on Sunday, June 15.

    Any additional nights are at the attendee’s own expense. To arrange accommodations, please register at the link included in your invitation.
    Schloss Elmau Hotel
    In Elmau 2, 82493 Krün
    Germany
    +49 8823 180
    https://www.schloss-elmau.de/en/

    Ground Transportation in Germany

    Round-trip ground transportation between Munich International Airport (MUC) t or local train stations and Schloss Elmau will be coordinated by the Simons Foundation. Details in this regard will be communicated approximately two weeks in advance of the meeting.

    Attendees who booked their travel themselves should communicate their complete arrival and departure information to the Simons Foundation so that proper arrangements can be made on their behalf.

    Travel times between Schloss Elmau and MUC or common train stations are as follows:

    Munich International Airport: 1.5-2 hours

    Munich Central Station: 1.5-2 hours

    Garmisch-Partenkirchen Central Station: 20 minutes

    Klais Station: 10 minutes

    Travel Deviations & Changes after Ticketing

    The following travel specifications are considered deviations and will only be accommodated if the cost is less than or equal to the amount the Simons Foundation would pay for a standard round-trip ticket from your home city to the conference city:

    • Preferred airline
    • Preferred travel class
    • Specific flights/flight times
    • Travel dates outside those associated with the conference
    • Arriving or departing from an airport other than your home city or conference city airports, i.e. multi-segment or triangle trips.

    All deviations must be reviewed and approved by the Simons Foundation and, if the cost is more than what would normally be paid, a reimbursement quote must be obtained through the foundation’s travel agency before proceeding to booking and paying for travel out of pocket. All reimbursements for travel booked directly will be paid after the conclusion of the meeting.

    Changes After Ticketing

    All costs related to changes made to ticketed travel, including name changes, are to be paid for by the participant and are not reimbursable. Please contact the foundation’s travel agency for further assistance.

    Personal & Rental Cars

    Personal car and rental trips over 250 miles each way requires prior approval from the Simons Foundation via email.

    Rental cars must be pre-approved by the Simons Foundation.

  • On Thursday of the symposium week, there will be an optional group hike to Leutascher Geisterklamm. Attendees will confirm their hike participation via registration.

    https://www.alpenwelt-karwendel.de/leutascher-geister-klamm-mittenwald

    Departing on foot from Schloss Elmau, expert guides will lead participants through well-kept trails lined with lush vegetation to the Leutascher Geisterklamm, a magnificent gorge that features a powerful rushing river, blue pools, towering rock formations and the waterfall Leutaschklamm Wasserfallsteig. Participants will traverse various bridges that line the trail, one of which is 40 meters high and offers spectacular views down into the roaring water.

    The path through the Geisterklamm leads towards the center of the town of Mittenwald where a bus will be waiting to take participants back to Schloss Elmau for a late lunch.

    Terrain/Hike details:

    Depart: 9:45 AM

    Length: 3.5 hours

    Distance: 11 km/6.8 mi

    Altitude: 220 meters/722 feet

    Depth: 300 meters/984 feet

  • Overview

    Participants will be reimbursed for meals and local expenses including ground transportation. Expenses should be submitted through the foundation’s online expense reimbursement platform after the meeting’s conclusion.

    Expenses accrued because of meetings not directly related to the Simons Foundation-hosted meeting (a satellite meeting or meeting held at another institution, for example) will not be reimbursed by the Simons Foundation and should be paid by other sources.

    Below are key reimbursement takeaways; a full policy will be provided with the final logistics email circulated approximately 2 weeks prior to the meeting’s start.

    Meals

    The daily meal limit is $125; itemized receipts are required for expenses over $24 USD. The foundation DOES NOT provide a meal per diem and only reimburses actual meal expenses up the following amounts.

    • Breakfast $20
    • Lunch $30
    • Dinner $75

    Allowable Meal Expenses

    • Meals taken on travel days (when you traveled by air or train).
    • Meals not provided by the Simons Foundation.
    • Group dinners consisting of fellow meeting participants paid by a single person will be reimbursed up to $75 per person and the amount will count towards the $125 daily meal limit.

    Unallowable Meal Expenses

    • Meals taken outside those provided by the foundation (breakfast, lunch, breaks and/or dinner).
    • Meals taken on days not associated with Simons Foundation-coordinated events.
    • Minibar expenses.
    • Meal expenses for a non-foundation guest.

    Ground Transportation

    Expenses for ground transportation will be reimbursed for travel days (i.e. traveling to/from the airport or train station).

  • Meeting & Policy Questions

    Meghan Fazzi
    Senior Manager for Events & Administration
    [email protected]

    Travel & Hotel Assistance

    FCM Travel Meetings & Events
    [email protected]
    Hours: M-F, 8:30 AM-5:00 PM ET
    +1-888-789-6639

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