Feynman diagrams - 2025 PACE NSC

Question

A scientist who banned these objects from his classes described them as "Like the silicon chips ... bringing (0[1])computation to the masses." Freeman (0[1])Dyson helped popularize these objects, which are equivalent to his namesake perturbative series. Infrared or ultraviolet divergences (20[1])arise when these objects are "one-loop." Namesake "rules" are used to translate (20[1])these objects (0[1])into transition (*) amplitudes. Virtual photons are wavy lines (10[2])in these (10[2])objects, (10[8])whose (10[2])straight (10[1])lines (10[4])and vertices (10[4])represent (10[2])propagators and (10[1])interactions. Arrows (10[1])show antiparticles traveling backwards in time in these objects. (10[1]0[1])For 10 points, name these graph-like illustrations (10[1])pioneered by a much-mythologized (10[1])Caltech physicist. (10[1])■END■ (10[4])

ANSWER: Feynman diagrams [prompt on diagrams] (The lead-in describes Julian Schwinger.)

= Average correct buzz position

Buzzes

Player	Team	Opponent	Buzz Position	Value
Ray Guan	Winston Churchill B	Chattahoochee B	17	0
Everett Van Til	Homewood-Flossmoor	Thomas Jefferson D	22	0
Jefferson Ji	Westwood	Innovation Academy A	39	20
Eshaan Sombhatta	Thomas Jefferson C	Detroit Catholic Central C	51	20
Jason Yao	Montgomery Blair B	Thomas Jefferson B	53	0
Gugan Thuduppathy	Montgomery Blair A	Adlai E. Stevenson A	61	10
Ryan Smith	Downingtown STEM	Chattahoochee A	61	10
b	Team 2	Team 1	63	10
Aaryan Sumesh	Thomas Jefferson A	Eastchester	63	10
Evan Giles	Uni School of Nashville B	Carmel A	64	10
Anvith Vanukuri	Fremd	Walter Payton A	64	10
Kaiden Lee	Northview	Hinsdale Central A	64	10
Dominic Salazar	Irvington	Yukon B	64	10
Max Chen	Strake Jesuit A	Park Tudor	64	10
Sreyas Sabbani	Innovation Academy B	Seven Lakes	64	10
Brandon Torres	Carl Sandburg	Walker	64	10
Kevin Qiu	Wayzata	Uni of Illinois Laboratory	64	10
Vidur Kothur	Lindbergh	Lambert A	65	10
Andrew Zhao	Richard Montgomery	Hunter A	65	10
Darren Kellis	Milton	Uni School of Nashville A	66	10
Aadi Pudasaini	Lexington	Adlai E. Stevenson B	67	10
Camden Williams	Audrain County AT	Grosse Pointe South	67	10
Sreekar Vajjha	Classen SAS	Barrington	67	10
Sasha Tripathi	Parkway West	Glenbrook South	67	10
Kevin Adler	Northmont	Belmont	69	10
Matthew Yang	Centennial B	Saratoga	69	10
Neel Rege	Great Valley	Georgetown Day	69	10
Snehan Saroch	Russell	Herron	69	10
Rochan Saireddy	Lambert B	Centennial A	70	10
Aaron Liu	Okemos	North Quincy	70	10
Sean Harbison	West Point	Edina	72	10
Wyatt Johnson	Solon	Lee's Summit	74	10
Tyler Mercado	Lincoln-Way East A	Walter Payton B	83	0
Christopher Stewart	Yukon A	Virginia	83	10
Samy El-Zahabi	Chattahoochee B	Winston Churchill B	90	10
Camille Pimentel	Hunter B	Coronado	94	10
Hrishi Bhooma	Thomas Jefferson D	Homewood-Flossmoor	96	10
Saathvik Koneru	Detroit Catholic Central B	Page	97	10
Aaron Zhang	Walter Payton B	Lincoln-Way East A	97	10
Aarushi Kanigicherla	Thomas Jefferson B	Montgomery Blair B	97	10
Rajiv Pujara	Fairfield County AT	White Pigeon	97	10

Summary

Tournament	Edition	Exact Match?	TUH	Conv. %	Power %	Neg %	Average Buzz
2025 PACE NSC	06/07/2025	Y	37	100%	5%	0%	71.00