Cristiano Germani
University of Barcelona
93 Papers
1.1K Citations
Cristiano Germani is an academic researcher from University of Barcelona. The author has contributed to research in topics: Inflation (cosmology) & Brane. The author has an hindex of 36, co-authored 89 publications. Previous affiliations of Cristiano Germani include Paris Diderot University & Max Planck Society.
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Papers
On primordial black holes from an inflection point
TL;DR: In this paper, it was shown that the model is over-shot from a stage of standard inflation and deviates from the slow-roll attractor before reaching the inflection point.
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Prospects for Fundamental Physics with LISA
Enrico Barausse,Emanuele Berti,Thomas Hertog,Scott A. Hughes,Philippe Jetzer,Paolo Pani,Thomas P. Sotiriou,Nicola Tamanini,Helvi Witek,Kent Yagi,Nicolás Yunes,Tiziano Abdelsalhin,Ana Achúcarro,K. V. Aelst,Niayesh Afshordi,Sarp Akcay,Lorenzo Annulli,K. G. Arun,Ismael Ayuso,Vishal Baibhav,Tessa Baker,H. Bantilan,Tiago Barreiro,Cristian Barrera-Hinojosa,Nicola Bartolo,Daniel Baumann,Enis Belgacem,Emilio Bellini,Nicola Bellomo,Ido Ben-Dayan,Iosif Bena,Robert Benkel,E. Bergshoefs,Laura Bernard,Sebastiano Bernuzzi,Daniele Bertacca,M. Besancon,Florian Beutler,Florian Beyer,Swetha Bhagwat,Jiri Bicak,Simone Biondini,Sébastien Bize,Diego Blas,Christian G. Boehmer,Klaus J. Boller,Béatrice Bonga,Camille Bonvin,Pasquale Bosso,Gabriele Bozzola,Philippe Brax,Moritz Breitbach,Richard Brito,Marco Bruni,Bernd Brügmann,H. J. Bulten,Alessandra Buonanno,A. O. Burke,Lior M. Burko,Clare Burrage,Francisco Cabral,Gianluca Calcagni,Chiara Caprini,Alejandro Cárdenas-Avendaño,Marco Celoria,Katerina Chatziioannou,David F. Chernoff,Katy Clough,Andrew J. Coates,D. Comelli,Geoffrey Compère,Djuna Croon,D. Cruces,Giulia Cusin,Charles Dalang,U. Danielsson,Saurya Das,Sayak Datta,J. de Boer,V. De Luca,C. De Rham,Vincent Desjacques,Kyriakos Destounis,F. Di Filippo,Alexandru Dima,Emanuela Dimastrogiovanni,Sam R. Dolan,Daniela D. Doneva,F. Duque,Ruth Durrer,William E. East,Richard Easther,Matthew Elley,John Ellis,Roberto Emparan,Jose María Ezquiaga,Malcolm Fairbairn,Stephen Fairhurst,Hontas Farmer,Matteo Fasiello,Valeria Ferrari,Pedro G. Ferreira,G. Ficarra,Pau Figueras,S. Fisenko,Stefano Foffa,Nicola Franchini,Gabriele Franciolini,Kwinten Fransen,Jörg Frauendiener,Noemi Frusciante,R. Fujita,J. R. Gair,Alexander Ganz,Pedro García,Juan Garcia-Bellido,Jaume Garriga,Remi Geiger,C. Geng,László Á. Gergely,Cristiano Germani,Davide Gerosa,Steven B. Giddings,Eric Gourgoulhon,P. Grandclément,L. Graziani,Leonardo Gualtieri,Daryl Haggard,Sadakazu Haino,R. G. Halburd,Wen-Biao Han,A. J. Hawken,Aurélien Hees,Ik Siong Heng,Jörg Hennig,Carlos A. R. Herdeiro,Sigbjørn Hervik,J. v. Holten,C. D. Hoyle,Y. Hu,Mark A. Hull,T. Ikeda,Maximiliano Isi,Alexander C. Jenkins,Félix-Louis Julié,E. Kajfasz,C. V. Kalaghatgi,Nemanja Kaloper,Marc Kamionkowski,Vladimír Karas,Shilpa Kastha,Zoltán Keresztes,Larry Kidder,T. Kimpson,Antoine Klein,Sergei A. Klioner,Kostas D. Kokkotas,H. Kolesova,Shimon Kolkowitz,Joachim Kopp,Kazuya Koyama,N. V. Krishnendu,Juan A. Valiente Kroon,Martin Kunz,O. Lahav,Arnaud Landragin,R. N. Lang,C. Le Poncin-Lafitte,José P. S. Lemos,B. Li,Stefano Liberati,Michele Liguori,F. Lin,G. Liu,Francisco S. N. Lobo,Renate Loll,Lucas Lombriser,Geoffrey Lovelace,Rodrigo Panosso Macedo,Eric Madge,Elisa Maggio,Michele Maggiore,Stefania Marassi,Paolo Marcoccia,Charalampos Markakis,W. Martens,K. Martinovic,Carlos Martins,Andrea Maselli,S. Mastrogiovanni,S. Matarrese,Andrew Matas,Nick E. Mavromatos,Anupam Mazumdar,P. D. Meerburg,Eugenio Megias,J. S. Miller,José P. Mimoso,L. Mittnacht,Marina Martinez Montero,Ben Moore,Prado Martín-Moruno,Ilia Musco,Hiroyuki Nakano,Sourabh Nampalliwar,Germano Nardini,Alex B. Nielsen,J. Novák,Nelson J. Nunes,Maria Okounkova,Roberto Oliveri,F. Oppizzi,G. Orlando,Naritaka Oshita,George Pappas,Vasileios Paschalidis,Hiranya V. Peiris,Marco Peloso,Scott Perkins,V. Pettorino,Igor Pikovski,Luigi Pilo,J. Podolsky,Andrew Pontzen,S. Prabhat,Geraint Pratten,Tomislav Prokopec,M. Prouza,H. Qi,Alvise Raccanelli,Arttu Rajantie,Lisa Randall,Guilherme Raposo,Vivien Raymond,S. Renaux-Petel,Angelo Ricciardone,Antonio Riotto,Travis Robson,Diederik Roest,R. Rollo,Shawn Rosofsky,J. J. Ruan,Diego Rubiera-Garcia,Milton Ruiz,Mirabela Rusu,F. Sabatie,Norichika Sago,Mairi Sakellariadou,Ippocratis D. Saltas,Laura Sberna,Bangalore Suryanarayana Sathyaprakash,Mark A. Scheel,Patricia Schmidt,B. F. Schutz,Pedro Schwaller,Lijing Shao,Stuart L. Shapiro,D. H. Shoemaker,António Alves da Silva,C. Simpson,Carlos F. Sopuerta,Alessandro D. A. M. Spallicci,B. A. Stefanek,Leo C. Stein,Nikolaos Stergioulas,Matthew J. Stott,P. J. Sutton,R. Svarc,H. Tagoshi,T. Tahamtan,Hiroki Takeda,T. Tanaka,G. Tantilian,Gianmassimo Tasinato,Oliver J. Tattersall,Saul A. Teukolsky,Alexandre Le Tiec,G. Theureau,Mark Trodden,A. E. Tolley,Alexandre Toubiana,Dina Traykova,Antonios Tsokaros,Caner Unal,C. S. Unnikrishnan,Elias C. Vagenas,Patrick Valageas,Michele Vallisneri,J. F. J. van den Brand,C. Van Den Broeck,M. van de Meent,Pierre Vanhove,Vijay Varma,John Veitch,Bert Vercnocke,L. Verde,Daniele Vernieri,Filippo Vernizzi,Rodrigo Vicente,Francesca Vidotto,Matt Visser,Zvonimir Vlah,S. Vretinaris,Sebastian H. Völkel,Q. Wang,Yu-Tong Wang,M. C. Werner,J. Westernacher,Rien van de Weygaert,David L. Wiltshire,Toby Wiseman,Patrick D. Wolf,K. Wu,K. Yamada,Huan Yang,L. Yi,X. Yue,D. Yvon,Miguel Zilhão,Aaron Zimmerman,Miguel Zumalacárregui +320 more
TL;DR: In this paper, the future potential of the LISA mission in the area of fundamental physics is further delineated and sharpen by identifying the sources that are currently expected to provide the principal contribution to our knowledge, and the areas that need further development.
Abundance of Primordial Black Holes Depends on the Shape of the Inflationary Power Spectrum
Cristiano Germani,Ilia Musco +1 more
TL;DR: In this paper, the authors combine peak theory and the numerical analysis of gravitational collapse in the radiation dominated era, and show that the abundance of primordial black holes, generated by an enhancement in the inflationary power spectrum, is extremely dependent on the shape of the peak.
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Physics potential of the International Axion Observatory (IAXO)
Eric Armengaud,David Attié,Stefano Basso,Pierre Brun,N. Bykovskiy,J. M. Carmona,J. F. Castel,S. Cebrián,Michele Cicoli,Marta Civitani,C. Cogollos,Joseph P. Conlon,D. Costa,T. Dafni,Ryuji Daido,A. V. Derbin,Marie-Anne Descalle,Klaus Kurt Desch,I. Dratchnev,Babette Döbrich,Alexey Dudarev,E. Ferrer-Ribas,Ivor Fleck,Javier Galan,Giorgio Galanti,Lluis Garrido,David Gascon,Loredana Gastaldo,Cristiano Germani,G. Ghisellini,Maurizio Giannotti,Ioannis Giomataris,S. N. Gninenko,N. Golubev,Ricardo Graciani,I. G. Irastorza,Krešimir Jakovčić,Jochen Kaminski,Milica Krčmar,C. Krieger,Biljana Lakić,Thierry Lasserre,P. Laurent,Olivier Limousin,A. Lindner,I. Lomskaya,BayarJon Paul Lubsandorzhiev,G. Luzón,M. C. D. Marsh,C. Margalejo,Federico Mescia,Manuel Meyer,Jordi Miralda-Escudé,Jordi Miralda-Escudé,H. Mirallas,V. N. Muratova,X.F. Navick,C. Nones,Alessio Notari,A. A. Nozik,A. A. Nozik,A. Ortiz de Solórzano,V. S. Pantuev,T. Papaevangelou,G. Pareschi,K. Perez,E. Picatoste,Michael J. Pivovaroff,Javier Redondo,Javier Redondo,Andreas Ringwald,M. Roncadelli,E. Ruiz-Choliz,J. Ruz,K. Saikawa,Jordi Salvado,M. P. Samperiz,T. Schiffer,S. Schmidt,U. Schneekloth,Matthias Schott,H. Silva,G. Tagliaferri,Fuminobu Takahashi,Fuminobu Takahashi,Fabrizio Tavecchio,H. Ten Kate,Igor Tkachev,Sergey Troitsky,E. V. Unzhakov,P. Vedrine,Julia Vogel,C. Weinsheimer,Amanda Weltman,Wen Yin,Wen Yin +95 more
TL;DR: The International Axion Observatory (IAXO) as discussed by the authors has the potential to find the QCD axion in the 1 meV~1 eV mass range where it solves the strong CP problem, can account for the cold dark matter of the Universe and be responsible for the anomalous cooling observed in a number of stellar systems.
Universal threshold for primordial black hole formation
TL;DR: In this paper, it was shown that the threshold to form primordial black holes from an initial spherically symmetric perturbation is, to an excellent approximation, universal whenever given in terms of the compaction function averaged over a sphere of radius, where the scale on which the maximum is reached is defined.
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