Zobrazeno 1 - 10
of 73
pro vyhledávání: '"Velhinho, Jose"'
We address the issue of inequivalent Fock representations in Quantum Field Theory in a curved homogenous and anisotropic background, namely Kantowski-Sachs spacetime. A family of unitarily equivalent Fock representations that are invariant under the
Externí odkaz:
http://arxiv.org/abs/2403.03601
Autor:
Velhinho, José
Publikováno v:
Mathematics 5 (2017) 3, 44
This short review is devoted to measures on infinite dimensional spaces. We start by discussing product measures and projective techniques. Special attention is paid to measures on linear spaces, and in particular to Gaussian measures. Transformation
Externí odkaz:
http://arxiv.org/abs/2312.04365
Autor:
Inácio, Ilda, Velhinho, José
Publikováno v:
Mathematics 2022, 10 (4), 644
We address two mathematical aspects of the Bir\'o--N\'eda dynamical model, recently applied in the statistical analysis of several and varied complex phenomena. First, we show that a given implicit assumption ceases to be valid outside the most simpl
Externí odkaz:
http://arxiv.org/abs/2311.13449
Autor:
Velhinho, José
Publikováno v:
Adv.Math.Phys. 2015 (2015) 608940
This review is devoted to measure theoretical methods in the canonical quantization of scalar field theories. We present in some detail the canonical quantization of the free scalar field. We study the measures associated with the free fields and pre
Externí odkaz:
http://arxiv.org/abs/2311.11304
Autor:
Cortez, Jerónimo, Navascués, Beatriz Elizaga, Marugán, Guillermo A. Mena, Torres-Caballeros, Alvaro, Velhinho, José M.
We study the canonical quantization of a scalar field in a Kantowski-Sachs spacetime. For simplicity, we consider compactified spatial sections, since this does not affect the ultraviolet behavior. A time-dependent canonical transformation is perform
Externí odkaz:
http://arxiv.org/abs/2307.03636
Publikováno v:
Universe 2021, 7, 299
The purpose of this review is to provide a brief overview of some recent conceptual developments about possible criteria to guarantee the uniqueness of the quantization in a variety of situations that are found in cosmological systems. These criteria
Externí odkaz:
http://arxiv.org/abs/2108.07489
Autor:
Cortez, Jerónimo, Navascués, Beatriz Elizaga, Marugán, Guillermo A. Mena, Prado, Santiago, Velhinho, José M.
Publikováno v:
Universe 2020, 6(12), 241
In generic curved spacetimes, the unavailability of a natural choice of vacuum state introduces a serious ambiguity in the Fock quantization of fields. In this review, we study the case of fermions described by a Dirac field in several cosmological s
Externí odkaz:
http://arxiv.org/abs/2011.04550
In this work, we present an overview of uniqueness results derived in recent years for the quantization of Gowdy cosmological models and for (test) Klein-Gordon fields minimally coupled to Friedmann-Lema\^{\i}tre-Robertson-Walker, de Sitter, and Bian
Externí odkaz:
http://arxiv.org/abs/1912.04203
Publikováno v:
In Computer Physics Communications February 2023 283
Autor:
Barack, Leor, Cardoso, Vitor, Nissanke, Samaya, Sotiriou, Thomas P., Askar, Abbas, Belczynski, Krzysztof, Bertone, Gianfranco, Bon, Edi, Blas, Diego, Brito, Richard, Bulik, Tomasz, Burrage, Clare, Byrnes, Christian T., Caprini, Chiara, Chernyakova, Masha, Chrusciel, Piotr, Colpi, Monica, Ferrari, Valeria, Gaggero, Daniele, Gair, Jonathan, Garcia-Bellido, Juan, Hassan, S. F., Heisenberg, Lavinia, Hendry, Martin, Heng, Ik Siong, Herdeiro, Carlos, Hinderer, Tanja, Horesh, Assaf, Kavanagh, Bradley J., Kocsis, Bence, Kramer, Michael, Tiec, Alexandre Le, Mingarelli, Chiara, Nardini, Germano, Nelemans, Gijs, Palenzuela, Carlos, Pani, Paolo, Perego, Albino, Porter, Edward K., Rossi, Elena M., Schmidt, Patricia, Sesana, Alberto, Sperhake, Ulrich, Stamerra, Antonio, Stein, Leo C., Tamanini, Nicola, Tauris, Thomas M., Urena-Lopez, L. Arturo, Vincent, Frederic, Volonteri, Marta, Wardell, Barry, Wex, Norbert, Yagi, Kent, Abdelsalhin, Tiziano, Aloy, Miguel Angel, Amaro-Seoane, Pau, Annulli, Lorenzo, Arca-Sedda, Manuel, Bah, Ibrahima, Barausse, Enrico, Barakovic, Elvis, Benkel, Robert, Bennett, Charles L., Bernard, Laura, Bernuzzi, Sebastiano, Berry, Christopher P. L., Berti, Emanuele, Bezares, Miguel, Blanco-Pillado, Jose Juan, Blazquez-Salcedo, Jose Luis, Bonetti, Matteo, Boskovic, Mateja, Bosnjak, Zeljka, Bricman, Katja, Bruegmann, Bernd, Capelo, Pedro R., Carloni, Sante, Cerda-Duran, Pablo, Charmousis, Christos, Chaty, Sylvain, Clerici, Aurora, Coates, Andrew, Colleoni, Marta, Collodel, Lucas G., Compere, Geoffrey, Cook, William, Cordero-Carrion, Isabel, Correia, Miguel, de la Cruz-Dombriz, Alvaro, Czinner, Viktor G., Destounis, Kyriakos, Dialektopoulos, Kostas, Doneva, Daniela, Dotti, Massimo, Drew, Amelia, Eckner, Christopher, Edholm, James, Emparan, Roberto, Erdem, Recai, Ferreira, Miguel, Ferreira, Pedro G., Finch, Andrew, Font, Jose A., Franchini, Nicola, Fransen, Kwinten, Gal'tsov, Dmitry, Ganguly, Apratim, Gerosa, Davide, Glampedakis, Kostas, Gomboc, Andreja, Goobar, Ariel, Gualtieri, Leonardo, Guendelman, Eduardo, Haardt, Francesco, Harmark, Troels, Hejda, Filip, Hertog, Thomas, Hopper, Seth, Husa, Sascha, Ihanec, Nada, Ikeda, Taishi, Jaodand, Amruta, Jimenez-Forteza, Philippe Jetzer Xisco, Kamionkowski, Marc, Kaplan, David E., Kazantzidis, Stelios, Kimura, Masashi, Kobayashi, Shiho, Kokkotas, Kostas, Krolik, Julian, Kunz, Jutta, Lammerzahl, Claus, Lasky, Paul, Lemos, Jose P. S., Said, Jackson Levi, Liberati, Stefano, Lopes, Jorge, Luna, Raimon, Ma, Yin-Zhe, Maggio, Elisa, Montero, Marina Martinez, Maselli, Andrea, Mayer, Lucio, Mazumdar, Anupam, Messenger, Christopher, Menard, Brice, Minamitsuji, Masato, Moore, Christopher J., Mota, David, Nampalliwar, Sourabh, Nerozzi, Andrea, Nichols, David, Nissimov, Emil, Obergaulinger, Martin, Obers, Niels A., Oliveri, Roberto, Pappas, George, Pasic, Vedad, Peiris, Hiranya, Petrushevska, Tanja, Pollney, Denis, Pratten, Geraint, Rakic, Nemanja, Racz, Istvan, Radia, Miren, Ramazanouglu, Fethi M., Ramos-Buades, Antoni, Raposo, Guilherme, Rosca-Mead, Roxana, Rogatko, Marek, Rosinska, Dorota, Rosswog, Stephan, Morales, Ester Ruiz, Sakellariadou, Mairi, Sanchis-Gual, Nicolas, Salafia, Om Sharan, Samajdar, Anuradha, Sintes, Alicia, Smole, Majda, Sopuerta, Carlos, Souza-Lima, Rafael, Stalevski, Marko, Stergioulas, Nikolaos, Stevens, Chris, Tamfal, Tomas, Torres-Forne, Alejandro, Tsygankov, Sergey, Unluturk, Kivanc, Valiante, Rosa, van de Meent, Maarten, Velhinho, Jose, Verbin, Yosef, Vercnocke, Bert, Vernieri, Daniele, Vicente, Rodrigo, Vitagliano, Vincenzo, Weltman, Amanda, Whiting, Bernard, Williamson, Andrew, Witek, Helvi, Wojnar, Aneta, Yakut, Kadri, Yan, Haopeng, Yazadjiev, Stoycho, Zaharijas, Gabrijela, Zilhao, Miguel
The grand challenges of contemporary fundamental physics---dark matter, dark energy, vacuum energy, inflation and early universe cosmology, singularities and the hierarchy problem---all involve gravity as a key component. And of all gravitational phe
Externí odkaz:
http://arxiv.org/abs/1806.05195