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	Author	Ramirez-Uribe, S.; Renteria-Olivo, A.E.; Renteria-Estrada, D.F.; Martinez de Lejarza, J.J.; Dhani, P.K.; Cieri, L.; Hernandez-Pinto, R.J.; Sborlini, G.F.R.; Torres Bobadilla, W.J.; Rodrigo, G.
	Title	Vacuum amplitudes and time-like causal unitary in the loop-tree duality			Type	Journal Article
	Year	2025	Publication	Journal of High Energy Physics	Abbreviated Journal	J. High Energy Phys.
	Volume	01	Issue	1	Pages	103 - 24pp
	Keywords	Duality in Gauge Field Theories; Higher-Order Perturbative Calculations; Scattering Amplitudes
	Abstract	We present the first proof-of-concept application to decay processes at higher perturbative orders of loop-tree duality (LTD) causal unitary, a novel methodology that exploits the causal properties of vacuum amplitudes in the LTD and is directly well-defined in the four physical dimensions of the space-time. The generation of loop- and tree-level contributions to the differential decay rates from a kernel multiloop vacuum amplitude is shown in detail, and explicit expressions are presented for selected processes that are suitable for a lightweight understanding of the method. Specifically, we provide a clear physical interpretation of the local cancellation of soft, collinear and threshold singularities, and of the local renormalisation of ultraviolet singularities. The presentation is illustrated with numerical results that showcase the advantages of the method.
	Address	[Ramirez-Uribe, Selomit; Renteria-Olivo, Andres E.; Renteria-Estrada, David F.; de Lejarza, Jorge J. Martinez; Dhani, Prasanna K.; Cieri, Leandro; Rodrigo, German] Univ Valencia, Consejo Super Invest Cient, Inst Fis Corpuscular, Parc Cient, E-46980 Paterna, Valencia, Spain, Email: selomitru@uas.edu.mx;
	Corporate Author				Thesis
	Publisher	Springer	Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1029-8479	ISBN		Medium
	Area		Expedition		Conference
	Notes	WOS:001413847200008			Approved	no
	Is ISI	yes	International Collaboration	yes
	Call Number	IFIC @ pastor @			Serial	6517
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