Question
Ultracold neutrons were produced by transferring momentum from fast neutrons to these particles in a 2011 paper by Piegsa et al. Hydrodynamic transport of these particles can result in very high thermal conductivity due to wavelike heat transfer. These particles make up the linear portion of a dispersion relation that also includes maxons and rotons in superfluid helium. Scattering between two of these particles can occur by a normal or an (*) Umklapp process. Depending on whether neighboring atoms are in or out of phase, these quasiparticles are classified as “optical” or “acoustic.” In a crystal, these quasiparticles can be derived by considering each atom in its lattice site as a harmonic oscillator and then taking the normal modes. For 10 points, name these quasiparticles that are the quanta of sound. ■END■
Summary
2023 ARCADIA at Emory | Emory, Duke, Yale | Y | 4 | 75% | 0% | 0% | 101.67 |
2023 ARCADIA at Duke | Emory, Duke, Yale | Y | 4 | 50% | 0% | 25% | 110.00 |
2023 ARCADIA at Imperial | Imperial | Y | 5 | 100% | 0% | 0% | 88.60 |
2023 ARCADIA Online | Maryland, Online | Y | 2 | 100% | 0% | 0% | 91.00 |
2023 ARCADIA at Maryland | Maryland, Online | Y | 4 | 75% | 0% | 0% | 102.00 |
2023 ARCADIA at Texas | Ohio State, Texas | Y | 3 | 100% | 0% | 0% | 97.33 |
2023 ARCADIA at Ohio State | Ohio State, Texas | Y | 3 | 100% | 0% | 0% | 89.67 |
2023 ARCADIA at WUSTL | Premiere | Y | 2 | 100% | 0% | 0% | 98.50 |
2023 ARCADIA at Carleton University | Premiere | Y | 3 | 100% | 0% | 0% | 110.67 |
2023 ARCADIA at Claremont Colleges | Premiere | Y | 1 | 100% | 0% | 0% | 72.00 |
2023 ARCADIA at Indiana | Premiere | Y | 5 | 80% | 20% | 20% | 90.00 |
2023 ARCADIA at RIT | Premiere | Y | 2 | 100% | 50% | 0% | 71.50 |
2023 ARCADIA at UC Berkeley | Premiere | Y | 2 | 100% | 0% | 0% | 71.50 |
Buzzes
Player | Team | Opponent | Buzz Position | Value |
---|---|---|---|---|
Richard Niu | Cornell R | Cornell MATLAB | 54 | 15 |
Abby Lobasso | James Madison B | North Carolina A | 57 | -5 |
Yash Mandavia | Illinois B | Notre Dame B | 64 | -5 |
Andrew Wang | Illinois A | Chicago A | 68 | 15 |
Kevin Ye | Berkeley C | Berkeley B | 71 | 10 |
Michał Gerasimiuk | Stanford A | Berkeley A | 72 | 10 |
Will Alston | SGV Capital | Auxiliary Lofthouse Cookie University | 72 | 10 |
Rachel Bentham | Cambridge B | Edinburgh | 72 | 10 |
Stan Melkumian | Purdue A | Vanderbilt | 72 | 10 |
Agnijo Banerjee | Cambridge A | Oxford | 84 | 10 |
Michael Kohn | Durham | Birmingham | 85 | 10 |
Arya Karthik | Georgia Tech D | Georgia Tech C | 87 | 10 |
Max Niebur | Johns Hopkins | George Washington A | 87 | 10 |
Calvin Bostleman | Ohio State A | Kenyon B | 87 | 10 |
Arunn Sankar | Georgia Tech A | Georgia Tech B | 88 | 10 |
Dimitris Kalafatis | TAMU | HCC | 88 | 10 |
Sky Li | Toronto | McDouble West-Carleton | 89 | 10 |
Cade Reinberger | RIT | Syracuse+Rochester | 89 | 10 |
Aditya Sharma | Duke | South Carolina A | 91 | 10 |
Jaime Salamanco Camacho | Imperial B | Bristol | 91 | 10 |
Ezra Santos | Chicago B | Purdue B | 91 | 10 |
Isaac Mammel | Maryland A | Maryland B | 91 | 10 |
Dennis Yang | Michigan B | Ohio State B | 91 | 10 |
Yash | Michigan A | Kenyon A | 91 | 10 |
Daniel Ma | Farrellmagnetism | Arizona State | 91 | 10 |
Ariel Faeder | MSU A and Friend | Boston College | 91 | 10 |
Chinmay Murthy | Texas A | Texas B | 91 | 10 |
Doug Sachs | Missouri A | Missouri B | 96 | 10 |
Amith Punyala | WUSTL H2O | WUSTL XYZ | 101 | 10 |
Michael Mays | Imperial A | Warwick | 111 | 10 |
Ian Theysmeyer | Ottawa C | Ottawa B | 113 | 10 |
Ketan Pamurthy | tag magnet: taylor's version | Texas C | 113 | 10 |
Ethan Cohen | George Washington A | Georgetown | 128 | 10 |
Benjamin McAvoy-Bickford | North Carolina B | James Madison A | 129 | 10 |
Michael Durrant | Notre Dame B | Illinois B | 129 | 0 |
Zach Joseph | Notre Dame A | Indiana | 129 | 10 |
Michael Du | Waterloo | Ottawa A | 130 | 10 |
Andrew Oliphant | NC State | South Carolina B | 130 | 0 |
Elena Hernandez | South Carolina B | NC State | 130 | 0 |
Sara Simkins | Georgia B | Emory A | 130 | 0 |
Tarun Koti | Emory A | Georgia B | 130 | 0 |
Jon Golan | Georgia A | Tennesse A | 130 | 10 |
Wyatt Roder | Georgetown | George Washington B | 130 | 0 |