{"id":8518,"date":"2026-08-13T15:51:32","date_gmt":"2026-08-13T07:51:32","guid":{"rendered":"https:\/\/sites.gtiit.edu.cn\/research\/?post_type=people&#038;p=8518"},"modified":"2026-08-14T09:15:24","modified_gmt":"2026-08-14T01:15:24","slug":"hongkai-liu","status":"publish","type":"people","link":"https:\/\/sites.gtiit.edu.cn\/research\/people\/hongkai-liu\/","title":{"rendered":"Hongkai Liu"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"8518\" class=\"elementor elementor-8518\" data-elementor-settings=\"[]\">\n\t\t\t\t\t\t<div class=\"elementor-inner\">\n\t\t\t\t\t\t\t<div class=\"elementor-section-wrap\">\n\t\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-19949ff elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"19949ff\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-48a73f9\" data-id=\"48a73f9\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2d010df elementor-widget elementor-widget-spacer\" data-id=\"2d010df\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-64408c0c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"64408c0c\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-7c0c3fa2\" data-id=\"7c0c3fa2\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7ee924f1 elementor-widget elementor-widget-image\" data-id=\"7ee924f1\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-image\">\n\t\t\t\t\t\t\t\t\t\t\t\t<img width=\"769\" height=\"1024\" src=\"https:\/\/sites.gtiit.edu.cn\/research\/wp-content\/uploads\/sites\/2\/2026\/08\/Hongkai-Liu-769x1024.png\" class=\"attachment-large size-large\" alt=\"\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2052dde8 elementor-widget elementor-widget-heading\" data-id=\"2052dde8\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Hongkai Liu<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4b88712c elementor-widget elementor-widget-text-editor\" data-id=\"4b88712c\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p>Associate Professor,&nbsp;<span style=\"color: #777777\">Physics Program<\/span><\/p><p><span>Office: A303, North Campus<\/span><span style=\"color: #777777\"><\/span><\/p>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1518d11 elementor-widget elementor-widget-text-editor\" data-id=\"1518d11\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p><a href=\"mailto:hongkai.liu@gtiit.edu.cn\">hongkai.liu@gtiit.edu.cn<\/a><\/p><p><a href=\"https:\/\/orcid.org\/0000-0002-9322-7487\">https:\/\/orcid.org\/0000-0002-9322-7487<\/a><\/p>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2767076 elementor-widget elementor-widget-text-editor\" data-id=\"2767076\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-cf0b2d8\" data-id=\"cf0b2d8\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3be60586 elementor-tabs-view-horizontal elementor-widget elementor-widget-tabs\" data-id=\"3be60586\" data-element_type=\"widget\" data-widget_type=\"tabs.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-tabs\">\n\t\t\t<div class=\"elementor-tabs-wrapper\" role=\"tablist\" >\n\t\t\t\t\t\t\t\t\t<div id=\"elementor-tab-title-1001\" class=\"elementor-tab-title elementor-tab-desktop-title\" aria-selected=\"true\" data-tab=\"1\" role=\"tab\" tabindex=\"0\" aria-controls=\"elementor-tab-content-1001\" aria-expanded=\"false\"><a href=\"\">Overview<\/a><\/div>\n\t\t\t\t\t\t\t\t\t<div id=\"elementor-tab-title-1002\" class=\"elementor-tab-title elementor-tab-desktop-title\" aria-selected=\"false\" data-tab=\"2\" role=\"tab\" tabindex=\"-1\" aria-controls=\"elementor-tab-content-1002\" aria-expanded=\"false\"><a href=\"\">Research Interests<\/a><\/div>\n\t\t\t\t\t\t\t\t\t<div id=\"elementor-tab-title-1003\" class=\"elementor-tab-title elementor-tab-desktop-title\" aria-selected=\"false\" data-tab=\"3\" role=\"tab\" tabindex=\"-1\" aria-controls=\"elementor-tab-content-1003\" aria-expanded=\"false\"><a href=\"\">Representative Publications<\/a><\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t<div class=\"elementor-tabs-content-wrapper\" role=\"tablist\" aria-orientation=\"vertical\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-tab-title elementor-tab-mobile-title\" aria-selected=\"true\" data-tab=\"1\" role=\"tab\" tabindex=\"0\" aria-controls=\"elementor-tab-content-1001\" aria-expanded=\"false\">Overview<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-1001\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"1\" role=\"tabpanel\" aria-labelledby=\"elementor-tab-title-1001\" tabindex=\"0\" hidden=\"false\"><p>Dr. Hongkai Liu received his Ph.D. in Physics from the University of Pittsburgh in 2021. From July 2021 to June 2024, he worked as a postdoc at the Technion. From August 2024 to July 2026, he was a postdoc at Brookhaven National Laboratory in the United States.<\/p>\n<p>Despite the remarkable successes of the Standard Model (SM) in explaining and predicting a wide range of experimental observations, several fundamental questions remain unanswered. For instance, the origin of neutrino masses and why they are significantly smaller compared to other fermions in the SM is still unknown. Additionally, we do not know the nature of dark matter (DM), the origin of baryon asymmetry in the universe, and why the neutron electric dipolemoment is so tiny. To find answers to those fundamental questions, Dr. Hongkai Liu\u2019s research is currently focused on neutrino physics, dark matter, collider phenomenology, Effective Field Theory, and scattering amplitudes. He has a wide range of interests from nuclear physics to cosmology as well.<\/p><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-tab-title elementor-tab-mobile-title\" aria-selected=\"false\" data-tab=\"2\" role=\"tab\" tabindex=\"-1\" aria-controls=\"elementor-tab-content-1002\" aria-expanded=\"false\">Research Interests<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-1002\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"2\" role=\"tabpanel\" aria-labelledby=\"elementor-tab-title-1002\" tabindex=\"0\" hidden=\"hidden\"><ul>\n<li style=\"font-size: 15px\">Neutrino Physics<\/li>\n<li>Dark Matter<\/li>\n<li>Collider Phenomenology<\/li>\n<li>Effective Field Theory<\/li>\n<li>Scattering Amplitudes<\/li>\n<\/ul><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-tab-title elementor-tab-mobile-title\" aria-selected=\"false\" data-tab=\"3\" role=\"tab\" tabindex=\"-1\" aria-controls=\"elementor-tab-content-1003\" aria-expanded=\"false\">Representative Publications<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-1003\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"3\" role=\"tabpanel\" aria-labelledby=\"elementor-tab-title-1003\" tabindex=\"0\" hidden=\"hidden\"><p><a href=\"https:\/\/doi.org\/10.1007\/JHEP11(2019)028\">Nonstandard neutrino interactions at COHERENT, DUNE, T2HK and LHC<\/a>. Tao Han, Jiajun Liao, Hongkai Liu, Danny Marfatia. <i>JHEP<\/i> 11 (2019) 028.<\/p>\n<p><a href=\"https:\/\/doi.org\/10.1007\/JHEP07(2020)207\">Scalar and tensor neutrino interactions.<\/a> Tao Han, Jiajun Liao, Hongkai Liu, Danny Marfatia. <i>JHEP<\/i> 07 (2020) 207.<\/p>\n<p><a href=\"https:\/\/doi.org\/10.1007\/JHEP02(2021)015\">Anomalous dimensions from gauge couplings in SMEFT with right-handed neutrinos.<\/a> Alakabha Datta, Jacky Kumar, Hongkai Liu, Danny Marfatia. <i>JHEP<\/i> 02 (2021) 015.<\/p>\n<p><a href=\"https:\/\/doi.org\/10.1007\/JHEP07(2021)045\">Electroweak phase transition with an SU(2) dark sector.<\/a> Tathagata Ghosh, Huai-ke Guo, Tao Han, Hongkai Liu. <i>JHEP<\/i> 07 (2021) 045.<\/p>\n<p><a href=\"https:\/\/doi.org\/10.1103\/PhysRevD.106.L011702\">B \u2192D(\u2217)\u2113X decays in effective field theory with massive right-handed neutrinos.<\/a> Alakabha Datta, Hongkai Liu, Danny Marfatia. <i>Phys.Rev.D<\/i> 106 (2022), L011702.<\/p>\n<p><a href=\"https:\/\/doi.org\/10.1007\/JHEP05(2023)241\">An EFT hunter\u2019s guide to two-to-two scattering: HEFT and SMEFT on-shell amplitudes.<\/a> Hongkai Liu, Teng Ma, Yael Shadmi, Michael Waterbury. <i>JHEP<\/i> 05 (2023) 241.<\/p>\n<p><a href=\"https:\/\/doi.org\/10.1007\/JHEP08(2023)173\">A Guide to Diagnosing Colored Resonances at Hadron Colliders.<\/a> Tao Han, Ian Lewis, Hongkai Liu, Zhen Liu, Xing Wang. <i>JHEP<\/i> 08 (2023) 173.<\/p>\n<p><a href=\"https:\/\/doi.org\/10.1007\/JHEP02(2024)123\">Probing axion-like particles at the Electron-Ion Collider.<\/a> Reuven Balkin, Or Hen, Wenliang Li, Hongkai Liu, Teng Ma, Yotam Soreq, Mike Williams. <i>JHEP<\/i> 02 (2024) 123.<\/p>\n<p><a href=\"https:\/\/doi.org\/10.1103\/gtsf-24x4\">Electron-ion collider as a discovery tool for invisible dark bosons.<\/a> Hooman Davoudiasl, Hongkai Liu. <i>Phys.Rev.D<\/i> 112 (2025) 7, 075001.<\/p>\n<p><a href=\"https:\/\/doi.org\/10.1103\/7z6x-ygqq\">Probing Top Quark &#8211; Electron Interactions at Future Colliders.<\/a> Luigi Bellafronte, Sally Dawson, Pier Paolo Giardin, Hongkai Liu. <i>Phys.Rev.Lett<\/i>. 135 (2025) 25, 251801.<\/p>\n<p><a href=\"https:\/\/doi.org\/10.1103\/lnqv-bltq\">Weak Charge Form Factor Determination at the Electron-Ion Collider.<\/a> Hooman Davoudiasl, Hongkai Liu, Sonny Mantry, Ethan T. Neil. <i>Phys.Rev.D<\/i> 113 (2026) 5, L051301.<\/p><\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-b713d34 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b713d34\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-b36df1e\" data-id=\"b36df1e\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-45b4de4 elementor-widget elementor-widget-spacer\" data-id=\"45b4de4\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Hongkai Liu Associate Professor,\u00a0Physics Program Office: A303, North Campus hongkai.liu@gtiit.edu.cn https:\/\/orcid.org\/0000-0002-9322-7487 Overview Research Interests Representative Publications Overview Dr. Hongkai Liu received his Ph.D. in Physics from the University of Pittsburgh in 2021. From July 2021 to June 2024, he worked as a postdoc at the Technion. From August 2024 to July 2026, he was a [&hellip;]<\/p>\n","protected":false},"featured_media":0,"menu_order":0,"template":"elementor_header_footer","format":"standard","member":[87],"batch":[89],"_links":{"self":[{"href":"https:\/\/sites.gtiit.edu.cn\/research\/wp-json\/wp\/v2\/people\/8518"}],"collection":[{"href":"https:\/\/sites.gtiit.edu.cn\/research\/wp-json\/wp\/v2\/people"}],"about":[{"href":"https:\/\/sites.gtiit.edu.cn\/research\/wp-json\/wp\/v2\/types\/people"}],"version-history":[{"count":3,"href":"https:\/\/sites.gtiit.edu.cn\/research\/wp-json\/wp\/v2\/people\/8518\/revisions"}],"predecessor-version":[{"id":8560,"href":"https:\/\/sites.gtiit.edu.cn\/research\/wp-json\/wp\/v2\/people\/8518\/revisions\/8560"}],"wp:attachment":[{"href":"https:\/\/sites.gtiit.edu.cn\/research\/wp-json\/wp\/v2\/media?parent=8518"}],"wp:term":[{"taxonomy":"member","embeddable":true,"href":"https:\/\/sites.gtiit.edu.cn\/research\/wp-json\/wp\/v2\/member?post=8518"},{"taxonomy":"batch","embeddable":true,"href":"https:\/\/sites.gtiit.edu.cn\/research\/wp-json\/wp\/v2\/batch?post=8518"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}