De Téramond's thesis led, in a joint experiment of the Universities of Lausanne, Munich and Zurich in 1979, to the confirmation of the charge symmetry breaking of the nuclear forces.[7][8] In collaboration with Stanley Brodsky and Ivan Schmidt he studied in 1990 the properties of a possible form of nuclear matter catalyzed by heavy quarks, known as hadro-charmonium.[9]
His research in collaboration with Brodsky and Hans Günter Dosch is centered on the extension and applications of holographic light front QCD (HLFQCD) to hadron structure and dynamics, based on the holographic embedding of light-front physics in a higher dimensional gravity theory (gauge/gravity duality).[2][3][10] Using the new holographic approach he also explored with Brodsky and Alexandre Deur the strength of the strong force at large distances where QCD iteration methods fail.[11][12]
More recently, also in collaboration with Brodsky and Dosch, it was found that color symmetry and confinement are manifest as an underlying superconformal algebraic structure in holographic QCD, which also leads to specific connections between mesons and baryons.[13][14]
De Téramond is an active member of the HLFHS Collaboration for the applications of the new holographic theories to strong interactions; in particular, to the study of the quark and gluon distribution functions in hadrons, including the strange and charm quark sea distribution in the proton, which are evolved to higher scales for meaningful comparisons with existing or upcoming experimental results.[15][16][17]
Networking projects
CRNet routing equipment at UCR: Abel Brenes, Ana L. Chavarría, de Téramond and Mario Guerra (April 1993).
The first BITNET connection was achieved in November 1990 with Florida Atlantic University using a digital satellite link from PanAmSat, followed by the connection of Panama in 1992 to the UCR node.[19] Concurrently, de Téramond led the project which culminated with the interconnection of the University of Costa Rica to the Internet in January 1993 using a point of presence (POP) established by the National Science Foundation (NSF) in Homestead, Florida.[19][20][21] He coordinated the initiative for the implementation of the National Research Network (CRNet) based on the TCP/IP protocols.[19] The project[22] (1993-2000) was driven by the University of Costa Rica and the Ministry of Science and Technology and became operational in April 1993.[20]
Under Saul Hahn's Hemisphere Wide Inter-University Scientific and Technological Information Network project (RedHUCyT) of the Organization of American States, de Téramond and his team of engineers from the University of Costa Rica participated in the pioneering connections of the Central American and Caribbean region to the Internet: Nicaragua (1994), Panamá (1994), Honduras (1995), Jamaica (1995), Guatemala (1995), El Salvador (1996) and Belize (1997).[23][24] With the support of the Costa Rican government, RedHUCyT provided a satellite ground station for the academic network. The antenna was inaugurated at the UCR campus on Abril 1997, thus ending a long controversy with the telecommunication's monopoly.[20]
De Téramond was the Director of the Computer Center at the University of Costa Rica (1997–2000) and Minister of Science and Technology of Costa Rica (2000-2002), where he led, jointly with the Instituto Costarricense de Electricidad (ICE), the implementation of the Advanced Internet Network to bring broadband connectivity across the country. The project network architecture was based on IP over ICE's optical fiber and the MPLS routing protocol.[25] The first phase of this project was successfully implemented in April 2001.[20]
He is a member of the board of directors of the Network Information Center (NIC CR)[26] since its creation in the early 90's. More recently, he participated in the establishment of the Internet Exchange Point (CRIX)[27] to allow the direct data exchange among all the participant autonomous systems, lowering the network delay and the costs of the international links. CRIX was inaugurated in 2014. He also contributed setting-up the Internet Consulting Council in Costa Rica (CCI)[28] which has become a reference point for Internet Governance.[citation needed]
^Siles, Ignacio (2017). "25 Years of the Internet in Central America: An interview with Guy de Téramond". Internet Histories. 1 (4): 349–358. doi:10.1080/24701475.2017.1383733.
^Gabioud, B.; Adler, J. C.; Joseph, C.; Loude, J. F.; Morel, N.; Perrenoud, A.; Perroud, J. P.; Tran, J. P.; Winkelmann, E.; Dahme, W.; Panke, H.; Renker, D.; Zupančič, Č.; Strassner, G.; Truöl, P. (1979). "n-n scattering length from the photon spectra of the reactions pi d -> gamma n n and pi p -> gamma n". Physical Review Letters. 42: 1508. doi:10.1103/PhysRevLett.42.1508.
^Cerdas, Max; de Téramond Guy F.; Gutierrez, Claudio (1990), "An international electronic connection for Central American scientists", Conferencia Espacial de la Américas, San José, Marzo 12-16, 1990, Conference Proceedings, Vol. 2, p. 680 (1991)
^de Téramond, Guy F.; Gutierrez, Claudio; Mata, Erick; Oreamuno, Rafael; Landweber, Lawrence H.; Bremel, Robert D. (1991). Establishment of an Internet Backbone Within Costa Rica: Proposal to the Agency for International Development.
^Hahn, Saul (1996), Networking in Latin America and the Caribbean: Recent advances of the OAS/RedHUCyT project. IGLU, 10: 53–61.
^Siles, Ignacio (2020). A Transnational History of the Internet in Central America, 1985–2000. Palgrave Macmillan Transnational History Series. Palgrave Macmillan. p. 148. doi:10.1007/978-3-030-48947-2. ISBN978-3-030-48947-2.
