wavefunction collapse - 2025 ACF Nationals

Tossup

This process occurs due to distinct gravitational potentials caused by different geometrical conformations in the Diósi–Penrose model. This process is characterized by a namesake rate and the correlation length in the continuous spontaneous localization model, which is a dynamical reduction model of this process. Choosing to perform a certain action appears to make (10[1])this process (10[1])occur retroactively in Wheeler’s delayed-choice (-5[1])experiment. (-5[2])This mathematical (-5[2])process (10[1]-5[1])does not occur because of the existence of a certain universal quantity (-5[1])in Hugh Everett’s (10[1])many-worlds interpretation. (10[5])Decoherence (-5[1])is a theory explaining this process, which involves (-5[1])a single random eigenvalue being measured. (10[2])For 10 points, (10[1])name this process in which an observation causes a quantity representing (10[3])quantum states, and denoted by psi (“sigh”), to take a single value. (10[2])■END■ (10[5]0[2])

ANSWER: wavefunction collapse [accept Diósi–Penrose collapse; or objective-collapse or spontaneous collapse; or reduction of the state vector; prompt on quantum decoherence until read by asking “What process does that theory help explain?”; reject “observation” or “measurement”]

= Average correct buzz position

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Buzzes

Player	Team	Opponent	Position	Value
Amogh Kulkarni	Georgia State	Waterloo B	52	10
Rasheeq Azad	North Carolina A	Toronto A	54	10
Nathan Sheffield	MIT	Johns Hopkins	59	-5
Andrew Wang	Illinois A	WUSTL A	60	-5
John Marvin	Chicago A	Waterloo A	60	-5
Alex Akridge	Indiana	Stanford	62	-5
Geoffrey Wu	Columbia A	Rutgers	62	-5
Colin Veevers	Ottawa	WUSTL B	63	10
Ryan Rosenberg	NYU	Yale	63	-5
Swapnil Garg	UC Berkeley A	Northwestern	75	-5
Karan Gurazada	Texas	Virginia Tech	78	10
Matthew Wang	British Columbia	Penn State	80	10
Kunaal Chandrashekar	Toronto B	Chicago B	80	10
Yashwanth Bajji	Michigan	Maryland	80	10
Shardul Rao	Minnesota	Cornell A	80	10
Henry Bon	Winona State	Virginia	80	10
Anuttam Ramji	UC Berkeley B	Florida	81	-5
Albert Yingzhi Nyang	LSE	Arizona State	89	-5
Rohan Dalal	Georgia Tech	Harvard	95	10
Shardul Parthasarathy	Illinois B	Ohio State	95	10
Cade Reinberger	RIT	Cornell B	98	10
Marcus Forbes-Green	Toronto C	Iowa State	109	10
David Bass	Johns Hopkins	MIT	109	10
Shiva Tegulla	UCF	Columbia B	109	10
Aiden Dartley	Rutgers	Columbia A	120	10
Graham Troy	North Carolina B	Vanderbilt	120	10
Bryan Ugaz	Arizona State	LSE	121	10
Jeremy Cummings	WUSTL A	Illinois A	121	10
Tim Morrison	Stanford	Indiana	121	10
Matt Schiavone	Northwestern	UC Berkeley A	121	10
Leo Law	Florida	UC Berkeley B	121	0
Liam Kusalik	Waterloo A	Chicago A	121	10
Andres Cordoba	Yale	NYU	121	0

Summary

Tournament	Exact Match?	TUH	Conv. %	Power %	Neg %	Average Buzz
2025 ACF Nationals	Yes	24	92%	0%	38%	95.77