One-loop infrared rescattering by enhanced scalar fluctuations during inflation

Autor: Fumagalli, Jacopo, Bhattacharya, Sukannya, Peloso, Marco, Renaux-Petel, Sébastien, Witkowski, Lukas T.

We show that, whenever the perturbations of some field are excited during inflation by a physical process on sub-horizon scales, they unavoidably generate, even through gravitational interactions alone, a significant resonant IR cascade of power down

Externí odkaz: http://arxiv.org/abs/2307.08358

Cosmology with the Laser Interferometer Space Antenna

Autor: Auclair, Pierre, Bacon, David, Baker, Tessa, Barreiro, Tiago, Bartolo, Nicola, Belgacem, Enis, Bellomo, Nicola, Ben-Dayan, Ido, Bertacca, Daniele, Besancon, Marc, Blanco-Pillado, Jose J., Blas, Diego, Boileau, Guillaume, Calcagni, Gianluca, Caldwell, Robert, Caprini, Chiara, Carbone, Carmelita, Chang, Chia-Feng, Chen, Hsin-Yu, Christensen, Nelson, Clesse, Sebastien, Comelli, Denis, Congedo, Giuseppe, Contaldi, Carlo, Crisostomi, Marco, Croon, Djuna, Cui, Yanou, Cusin, Giulia, Cutting, Daniel, Dalang, Charles, De Luca, Valerio, Del Pozzo, Walter, Desjacques, Vincent, Dimastrogiovanni, Emanuela, Dorsch, Glauber C., Ezquiaga, Jose Maria, Fasiello, Matteo, Figueroa, Daniel G., Flauger, Raphael, Franciolini, Gabriele, Frusciante, Noemi, Fumagalli, Jacopo, Garcia-Bellido, Juan, Gould, Oliver, Holz, Daniel, Iacconi, Laura, Jain, Rajeev Kumar, Jenkins, Alexander C., Jinno, Ryusuke, Joana, Cristian, Karnesis, Nikolaos, Konstandin, Thomas, Koyama, Kazuya, Kozaczuk, Jonathan, Kuroyanagi, Sachiko, Laghi, Danny, Lewicki, Marek, Lombriser, Lucas, Madge, Eric, Maggiore, Michele, Malhotra, Ameek, Mancarella, Michele, Mandic, Vuk, Mangiagli, Alberto, Matarrese, Sabino, Mazumdar, Anupam, Mukherjee, Suvodip, Musco, Ilia, Nardini, Germano, No, Jose Miguel, Papanikolaou, Theodoros, Peloso, Marco, Pieroni, Mauro, Pilo, Luigi, Raccanelli, Alvise, Renaux-Petel, Sébastien, Renzini, Arianna I., Ricciardone, Angelo, Riotto, Antonio, Romano, Joseph D., Rollo, Rocco, Pol, Alberto Roper, Morales, Ester Ruiz, Sakellariadou, Mairi, Saltas, Ippocratis D., Scalisi, Marco, Schmitz, Kai, Schwaller, Pedro, Sergijenko, Olga, Servant, Geraldine, Simakachorn, Peera, Sorbo, Lorenzo, Sousa, Lara, Speri, Lorenzo, Steer, Danièle A., Tamanini, Nicola, Tasinato, Gianmassimo, Torrado, Jesus, Unal, Caner, Vennin, Vincent, Vernieri, Daniele, Vernizzi, Filippo, Volonteri, Marta, Wachter, Jeremy M., Wands, David, Witkowski, Lukas T., Zumalacárregui, Miguel, Annis, James, Ares, Fëanor Reuben, Avelino, Pedro P., Avgoustidis, Anastasios, Barausse, Enrico, Bonilla, Alexander, Bonvin, Camille, Bosso, Pasquale, Calabrese, Matteo, Çalışkan, Mesut, Cembranos, Jose A. R., Chala, Mikael, Chernoff, David, Clough, Katy, Criswell, Alexander, Das, Saurya, da Silva, Antonio, Dayal, Pratika, Domcke, Valerie, Durrer, Ruth, Easther, Richard, Escoffier, Stephanie, Ferrans, Sandrine, Fryer, Chris, Gair, Jonathan, Gordon, Chris, Hendry, Martin, Hindmarsh, Mark, Hooper, Deanna C., Kajfasz, Eric, Kopp, Joachim, Koushiappas, Savvas M., Kumar, Utkarsh, Kunz, Martin, Lagos, Macarena, Lilley, Marc, Lizarraga, Joanes, Lobo, Francisco S. N., Maleknejad, Azadeh, Martins, C. J. A. P., Meerburg, P. Daniel, Meyer, Renate, Mimoso, José Pedro, Nesseris, Savvas, Nunes, Nelson, Oikonomou, Vasilis, Orlando, Giorgio, Özsoy, Ogan, Pacucci, Fabio, Palmese, Antonella, Petiteau, Antoine, Pinol, Lucas, Zwart, Simon Portegies, Pratten, Geraint, Prokopec, Tomislav, Quenby, John, Rastgoo, Saeed, Roest, Diederik, Rummukainen, Kari, Schimd, Carlo, Secroun, Aurelia, Sopuerta, Carlos F., Tereno, Ismael, Tolley, Andrew, Urrestilla, Jon, Vagenas, Elias C., van de Vis, Jorinde, van de Weygaert, Rien, Wardell, Barry, Weir, David J., White, Graham, Świeżewska, Bogumila, Zhdanov, Valery I.

The Laser Interferometer Space Antenna (LISA) has two scientific objectives of cosmological focus: to probe the expansion rate of the universe, and to understand stochastic gravitational-wave backgrounds and their implications for early universe and

Externí odkaz: http://arxiv.org/abs/2204.05434

Detecting primordial features with LISA

Autor: Fumagalli, Jacopo, Pieroni, Mauro, Renaux-Petel, Sébastien, Witkowski, Lukas T.

Oscillations in the frequency profile of the stochastic gravitational wave background are a characteristic prediction of small-scale features during inflation. In this paper we present a first investigation of the detection prospects of such oscillat

Externí odkaz: http://arxiv.org/abs/2112.06903

Expansion history-dependent oscillations in the scalar-induced gravitational wave background

Autor: Witkowski, Lukas T., Domènech, Guillem, Fumagalli, Jacopo, Renaux-Petel, Sébastien

Oscillations in the frequency profile of the scalar-induced contribution to the stochastic gravitational wave background are a characteristic signal for small-scale features during inflation. We investigate how this oscillatory frequency profile is a

Externí odkaz: http://arxiv.org/abs/2110.09480

Revisiting Coleman-de Luccia transitions in the AdS regime using holography

Autor: Ghosh, Jewel K., Kiritsis, Elias, Nitti, Francesco, Witkowski, Lukas T.

Coleman-de Luccia processes for AdS to AdS decays in Einstein-scalar theories are studied. Such tunnelling processes are interpreted as vev-driven holographic RG flows of a quantum field theory on de Sitter space-time. These flows do not exist for ge

Externí odkaz: http://arxiv.org/abs/2102.11881