Eduardo Ibarra Garcia Padilla, assistant professor of physics at Harvey Mudd College, and a team of physicists have developed a new theory that helps explain how trions, tiny quantum structures made up of three interacting particles, form and arrange themselves into distinctive checkerboard patterns.<\/p>\n\n\n\n
The findings, published in Physical Review Letters<\/em>, could have implications for nuclear physics, semiconductor design and materials science.<\/p>\n\n\n\n Trions form when three quantum particles bind together. While they appear across many branches of physics, the rules governing how they interact and self-organize have remained poorly understood. The new theory, led by Kaden Hazzard, professor of physics at Rice University, with contributions from Ibarra Garcia Padilla, professor Richard Scalettar at UC Davis, and Rice graduate student Jonathan Stepp, predicts not only the conditions under which trions form but also how they behave once they do.<\/p>\n\n\n\n \u201cOur theory sheds light on how trions form and interact with each other,\u201d Hazzard says. \u201cIt predicts the strength of the interactions needed to form the trions, and that, after formation, they arrange themselves in a checkerboard pattern.\u201d<\/p>\n\n\n\n For Ibarra Garcia Padilla, whose research uses computational methods to study quantum many-body systems, the work reflects the kind of collaborative, theory-driven physics research that connects Harvey Mudd faculty to questions at the frontiers of modern science.<\/p>\n\n\n\n To visualize the phenomenon, imagine a space filled with equal numbers of red, blue and yellow balls. A trion forms when one ball of each color sticks together. Once bound, the trions space themselves out in a precise pattern, each adjacent to an empty space rather than another trion, giving each formation room to move without interference.<\/p>\n\n\n\n The team\u2019s simulations showed this checkerboard arrangement emerges only under a specific Goldilocks density, meaning that, like Goldilocks\u2019 porridge in the classic fairy tale, the density needed to be just right for the trions to form the checkerboard pattern. With too many or too few particles, the behavior shifts toward a liquid or gas instead.<\/p>\n\n\n\n The team used a Monte Carlo computational algorithm, which runs millions of simulations to converge on accurate predictions of trion behavior. Working backward from the simulation outputs, the researchers identified the simple underlying physical principles that produce the checkerboard structure.<\/p>\n\n\n\n \u201cThat\u2019s the beauty of physics,\u201d Stepp says. \u201cIt\u2019s the same underlying equations describing how things behave in systems as cold as nanokelvin systems to ones as hot as the sun, whether it\u2019s one particle or billions.\u201d<\/p>\n\n\n\n The theory opens new experimental directions. Physicists can now design targeted experiments to test the predictions, refining their understanding of trion behavior across quantum systems, from ultracold atomic gases to semiconductors used in modern electronics.<\/p>\n\n\n\n \u201cOur results are exciting because our findings are experimentally accessible with ultracold molecules and open the possibility of understanding trion formation across other branches of physics such as transition-metal dichalcogenides, which are two-dimensional semiconductors widely studied for their possible applications in nanoelectronics and photonics,\u201d said Ibarra Garcia Padilla.<\/p>\n\n\n\n The research was funded by the National Science Foundation, the W.M. Keck Foundation and the U.S. Department of Energy, with computational support from Rice University\u2019s Center for Research Computing.<\/p>\n","protected":false},"excerpt":{"rendered":" Eduardo Ibarra Garcia Padilla, assistant professor of physics at Harvey Mudd College, and a team of physicists have developed a […]<\/p>\n","protected":false},"author":372,"featured_media":15512,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[14,967,24,26,23],"class_list":["post-15510","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-faculty","category-general-feed","category-physics","category-research","category-uncategorized"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.hmc.edu\/about\/wp-json\/wp\/v2\/posts\/15510","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hmc.edu\/about\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hmc.edu\/about\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hmc.edu\/about\/wp-json\/wp\/v2\/users\/372"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hmc.edu\/about\/wp-json\/wp\/v2\/comments?post=15510"}],"version-history":[{"count":1,"href":"https:\/\/www.hmc.edu\/about\/wp-json\/wp\/v2\/posts\/15510\/revisions"}],"predecessor-version":[{"id":15511,"href":"https:\/\/www.hmc.edu\/about\/wp-json\/wp\/v2\/posts\/15510\/revisions\/15511"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hmc.edu\/about\/wp-json\/wp\/v2\/media\/15512"}],"wp:attachment":[{"href":"https:\/\/www.hmc.edu\/about\/wp-json\/wp\/v2\/media?parent=15510"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hmc.edu\/about\/wp-json\/wp\/v2\/categories?post=15510"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}