Zobrazeno 1 - 10
of 155
pro vyhledávání: '"Simonović, Marko"'
High-number-density tracers of large-scale structure, such as the HI-rich galaxies measured by 21 cm intensity mapping, have low sampling noise, making them particularly promising as cosmological probes. At large scales, this sampling noise can be su
Externí odkaz:
http://arxiv.org/abs/2405.18559
Autor:
Cabass, Giovanni, Philcox, Oliver H. E., Ivanov, Mikhail M., Akitsu, Kazuyuki, Chen, Shi-Fan, Simonović, Marko, Zaldarriaga, Matias
Massive particles leave imprints on primordial non-Gaussianity via couplings to the inflaton, even despite their exponential dilution during inflation: practically, the Universe acts as a Cosmological Collider. We present the first dedicated search f
Externí odkaz:
http://arxiv.org/abs/2404.01894
We study how well perturbative forward modeling can constrain cosmological parameters compared to conventional analyses. We exploit the fact that in perturbation theory the field-level posterior can be computed analytically in the limit of small nois
Externí odkaz:
http://arxiv.org/abs/2307.04706
Autor:
Ivanov, Mikhail M., Philcox, Oliver H. E., Cabass, Giovanni, Nishimichi, Takahiro, Simonović, Marko, Zaldarriaga, Matias
We present a framework for self-consistent cosmological analyses of the full-shape anisotropic bispectrum, including the quadrupole $(\ell=2)$ and hexadecapole $(\ell=4)$ moments. This features a novel window-free algorithm for extracting the latter
Externí odkaz:
http://arxiv.org/abs/2302.04414
Autor:
Cabass, Giovanni, Ivanov, Mikhail M., Philcox, Oliver H. E., Simonovic, Marko, Zaldarriaga, Matias
We forecast the constraints on single-field inflation from the bispectrum of future high-redshift surveys such as MegaMapper. Considering non-local primordial non-Gaussianity (NLPNG), we find that current methods will yield constraints of order $\sig
Externí odkaz:
http://arxiv.org/abs/2211.14899
Autor:
Baumgart, Matthew, Bishara, Fady, Brauner, Tomas, Brod, Joachim, Cabass, Giovanni, Cohen, Timothy, Craig, Nathaniel, de Rham, Claudia, Draper, Patrick, Fitzpatrick, A. Liam, Gorbahn, Martin, Hartnoll, Sean, Ivanov, Mikhail, Kovtun, Pavel, Kundu, Sandipan, Lewandowski, Matthew, Liu, Hong, Lu, Xiaochuan, Mezei, Mark, Mirbabayi, Mehrdad, Moldanazarova, Ulserik, Nicolis, Alberto, Penco, Riccardo, Goldberger, Walter, Reece, Matthew, Rodd, Nicholas L., Rothstein, Ira, Shao, Shu-Heng, Shepherd, Will, Simonovic, Marko, Solon, Mikhail, Son, Dam Thanh, Szafron, Robert, Tolley, Andrew, Zhang, Zhengkang, Zhou, Shuang-Yong, Zupan, Jure
We summarize recent progress in the development, application, and understanding of effective field theories and highlight promising directions for future research. This Report is prepared as the TF02 "Effective Field Theory" topical group summary for
Externí odkaz:
http://arxiv.org/abs/2210.03199
Autor:
Green, Daniel, Ruderman, Joshua T., Safdi, Benjamin R., Shelton, Jessie, Achúcarro, Ana, Adshead, Peter, Akrami, Yashar, Baryakhtar, Masha, Baumann, Daniel, Berlin, Asher, Blinov, Nikita, Boddy, Kimberly K., Buschmann, Malte, Cabass, Giovanni, Caldwell, Robert, Castorina, Emanuele, Chen, Thomas Y., Chen, Xingang, Coulton, William, Croon, Djuna, Cui, Yanou, Curtin, David, Cyr-Racine, Francis-Yan, Dessert, Christopher, Dienes, Keith R., Draper, Patrick, Du, Peizhi, Ellis, Sebastian A. R., Essig, Rouven, Flauger, Raphael, Fong, Chee Sheng, Foster, Joshua W., Fumagalli, Jacopo, Harigaya, Keisuke, Horiuchi, Shunsaku, Ivanov, Mikhail M., Kahn, Yonatan, Knapen, Simon, Leane, Rebecca K., Lee, Hayden, Lentz, Erik W., Lewandowski, Matthew, Lisanti, Mariangela, Long, Andrew J., Loverde, Marilena, Maleknejad, Azadeh, McAllister, Liam, McDermott, Samuel D., McGehee, Robert, Meerburg, P. Daniel, Meyers, Joel, Dizgah, Azadeh Moradinezhad, Münchmeyer, Moritz, Outmezguine, Nadav Joseph, Pajer, Enrico, Palma, Gonzalo A., Parikh, Aditya, Park, Jong-Chul, Peter, Annika H. G., Pimentel, Guilherme L., Renaux-Petel, Sébastien, Rodd, Nicholas L., Shakya, Bibhushan, Shiu, Gary, Silverstein, Eva, Simonovic, Marko, Singh, Rajeev, Sleight, Charlotte, Takhistov, Volodymyr, Tanedo, Philip, Taronna, Massimo, Thomas, Brooks, Toro, Natalia, Tsai, Yu-Dai, Vitagliano, Edoardo, Vogelsberger, Mark, Wallisch, Benjamin, Wandelt, Benjamin D., Wechsler, Risa H., Weniger, Christoph, Wu, W. L. Kimmy, Xu, Weishuang Linda, Yamada, Masaki, Yu, Hai-Bo, Zhang, Zhengkang, Zhong, Yi-Ming, Zurek, Kathryn
We summarize progress made in theoretical astrophysics and cosmology over the past decade and areas of interest for the coming decade. This Report is prepared as the TF09 "Astrophysics and Cosmology" topical group summary for the Theory Frontier as p
Externí odkaz:
http://arxiv.org/abs/2209.06854
We use an analytical forward model based on perturbation theory to predict the neutral hydrogen (HI) overdensity maps at low redshifts. We investigate its performance by comparing it directly at the field level to the simulated HI from the IllustrisT
Externí odkaz:
http://arxiv.org/abs/2207.12398
Autor:
Philcox, Oliver H. E., Ivanov, Mikhail M., Cabass, Giovanni, Simonović, Marko, Zaldarriaga, Matias, Nishimichi, Takahiro
We study the cosmological information content of the redshift-space galaxy bispectrum monopole at one-loop order in perturbation theory. We incorporate all effects necessary for comparison to data: fourth-order galaxy bias, infrared resummation (acco
Externí odkaz:
http://arxiv.org/abs/2206.02800
Autor:
Cabass, Giovanni, Ivanov, Mikhail M., Philcox, Oliver H. E., Simonović, Marko, Zaldarriaga, Matias
We use redshift-space galaxy clustering data from the BOSS survey to constrain local primordial non-Gaussianity (LPNG). This is of particular importance due to the consistency relations, which imply that a detection of LPNG would rule out all single-
Externí odkaz:
http://arxiv.org/abs/2204.01781