The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
Di Valentino E, Said JL, Riess A, Pollo A, Poulin V, Gómez-Valent A, Weltman A, Palmese A, Huang CD, Bruck Cvd, Saraf CS, Kuo CY, Uhlemann C, Grandón D, Paz D, Eckert D, Teixeira EM, Saridakis EN, Colgáin E, Beutler F, Niedermann F, Bajardi F, Barenboim G, Gubitosi G, Musella I, Banik I, Szapudi I, Singal J, Cases JH, Chluba J, Torrado J, Mifsud J, Jedamzik K, Said K, Dialektopoulos K, Herold L, Perivolaropoulos L, Zu L, Galbany L, Breuval L, Visinelli L, Escamilla LA, Anchordoqui LA, Sheikh-Jabbari MM, Lembo M, Dainotti MG, Vincenzi M, Asgari M, Gerbino M, Forconi M, Cantiello M, Moresco M, Benetti M, Schöneberg N, Akarsu Ö, Nunes RC, Bernardo RC, Chávez R, Anderson RI, Watkins R, Capozziello S, Li S, Vagnozzi S, Pan S, Treu T, Irsic V, Handley W, Giarè W, Murakami Y, Banihashemi A, Poudou A, Heavens A, Kogut A, Domi A, Lenart AŁ, Melchiorri A, Vadalà A, Amon A, Rivera AB, Reeves A, Zhuk A, Bonanno A, Övgün A, Pisani A, Talebian A, Abebe A, Aboubrahim A, Morán ALG, Kovács A, Lymperis A, Papatriantafyllou A, Liddle AR, Paliathanasis A, Borowiec A, Yadav AK, Yadav A, Sen AA, William AJ, Davis AC, Shajib AJ, Walters A, Lonappan AI, Chudaykin A, Capodagli A, Silva Ad, Felice AD, Racioppi A, Oficial AS, Montiel A, Favale A, Bernui A, Velasco AC, Heinesen A, Bakopoulos A, Chatzistavrakidis A, Khanpour B, Sathyaprakash BS, Zgirski B, L'Huillier B, Famaey B, Jain B, Zhang B, Karmakar B, Dragovich B, Thomas B, Correa C, Boiza CG, Marques C, Escamilla-Rivera C, Tzerefos C, Zhang C, Leo CD, Pfeifer C, Lee C, Venter C, Gomes C, bom CRD, Moreno-Pulido C, Iosifidis D, Grin D, Blixt D, Scolnic D, Oriti D, Dobrycheva D, Bettoni D, Benisty D, Fernández-Arenas D, Wiltshire DL, Cid DS, Tamayo D, Valls-Gabaud D, Pedrotti D, Wang D, Staicova D, Totolou D, Rubiera-Garcia D, Milaković D, Pesce DW, Sluse D, Borka D, Yusofi E, Giusarma E, Terlevich E, Tomasetti E, Vagenas EC, Fazzari E, Ferreira EG, Barakovic E, Dimastrogiovanni E, Holm EB, Mottola E, Özülker E, Specogna E, Brocato E, Jensko E, Enriquez EA, Bhatia E, Bresolin F, Avila F, Bouchè F, Bombacigno F, Anagnostopoulos FK, Pace F, Sorrenti F, Lobo FS, Courbin F, Hansen FK, Sloan G, Farrugia G, Lynch G, Garcia-Arroyo G, Raimondo G, Lambiase G, Anand GS, Poulot G, Leon G, Kouniatalis G, Nardini G, Csörnyei G, Galloni G, Bargiacchi G, Papagiannopoulos G, Montani G, Otalora G, Somma GD, Fiorentino G, Fanizza G, Luciano GG, Sarracino G, Olmo GJ, Djordjević GS, Cañas-Herrera G, Cheng H, Desmond H, Abdalla H, Chen H, Chiang HW, Feldman HA, Gohar H, Ben-Dayan I, Sevilla-Noarbe I, Antoniadis I, Cimdiker I, Albuquerque IS, Gialamas ID, Saltas I, Vavilova I, Gómez-Vargas I, Ayuso I, Zeynalabdi IN, Martino ID, Zavala I, Vázquez JA, Asorey J, Gluza J, Rubio J, Sorce JG, Wagner J, Sakstein J, Santiago J, Braatz J, Peracaula JS, Blakeslee J, Webb J, Cembranos JA, Mimoso JP, Jensen J, García-Bellido J, Prat J, Sammut K, Lehnert K, Dienes KR, Deka K, Kuijken K, Naidoo K, Gergely LÁ, Järv L, Mersini-Houghton L, Graef LL, Vacher L, Pogosian L, Anguelova L, Hamolli L, Yin L, Caloni L, Izzo L, Macri L, Padilla LE, García LÁ, Bilicki M, Najafi M, Plionis M, Gonzalez-Espinoza M, Hohmann M, Westhuizen MAd, Marconi M, Postolak M, Cesare Md, Regis M, Biesiada M, Einasto M, Saal M, Caruana M, Petronikolou M, Bouhmadi-López M, Melo M, Angelis MD, Célérier MN, Cortês M, Reid M, Rau MM, Sloth MS, Raidal M, Takada M, Reyhani M, Romanello M, Marengo M, Garny M, Leizerovich M, Martinelli M, Tagliazucchi M, Demirci M, Pinto MA, Sabogal MA, García-Aspeitia MA, Milošević M, Ghodsi M, Ishak M, Nunes NJ, Samaras N, Hamaus N, Schuster N, Borghi N, Deiosso N, Tamanini N, Fornengo N, Katırcı N, Mavromatos NE, Petropoulos N, Šarčević N, Nilsson NA, Khosravi N, Frusciante N, Postavaru O, Trivedi O, Sokoliuk O, Mena O, Morilla P, Campeti P, Salucci P, Boubel P, Bielewicz P, Heinämäki P, Suman P, Asimakis P, Ntelis P, Nath P, Jovanović P, Mukherjee P, Wojtak R, Gsponer R, Dejrah RH, Shah R, Hajjar R, Briffa R, Habas R, Pantig RC, Mendoza R, Monica RD, Stiskalek R, Roshan R, Neves RB, Molinaro R, Terlevich R, D'Agostino R, Sandoval-Orozco R, Batista RC, Ruchika , Lazkoz R, Rastgoo S, Mohammadi S, Sirletti SS, Haridasu S, Mandal S, Das S, Bahamonde S, Grandis S, Trojanowski S, Odintsov SD, Mazurenko S, Joudaki S, Suyu SH, Choudhury SR, Bhatporia S, Li SS, Bird S, Birrer S, Paradiso S, Costa SSd, Contarini S, Henrot-Versillé S, Basilakos S, Casertano S, Gariazzo S, Tsilioukas SA, Kalita S, Kumar S, Landau SJ, Castello S, Panda S, Petrushevska T, Karakasis T, Brinckmann T, Gonçalves TB, Schiavone T, Abel T, Koivisto T, Bringmann T, Demirbozan U, Kumar U, Marra V, Putten MH, Kalaitzidis V, Mitsou VA, Zarikas V, Pasic V, Keus V, Motta V, Jovanović VB, Cárdenas VH, Ripepi V, Salzano V, Impellizzeri V, Fonseca Vd, Ghirardini V, Vansevičius V, Yang W, Hellwing W, Ren X, Hu YM, Zhai Y, Sultan AM, Nosirov A, Pataki A, Santoni A, Batool A, Chakraborty A, Wojnar A, Tursunov A, De A, Hazarika A, Li B, Bose B, Mishra B, Ahmedov B, Scóccola C, Tortora C, Kenworthy DA, Holz DE, Mota DF, Pereira DS, Williams DM, Brout D, Lee DH, Guendelman E, Olex E, Silva E, Kahya EO, Mueller EM, Andrade-Oliveira F, Hunde FM, Joaquim FR, Pacaud F, Cyr-Racine FY, Nuñez FP, Rácz G, Belinario GC, Lewis GF, Dálya G, Laverda G, Risaliti G, Franco-Abellán G, Zammit H, Camilleri H, Courtois HM, Moradpour H, Pedreira IdOC, Lopes I, Csabai I, Rohlf JW, Bogdanoska J, Pérez JdC, Bachs-Esteban J, Sultana J, Lesgourgues J, Jiang JQ, Castillo KP, Jusufi K, Heisenberg L, Pati L, Koopmans LV, Duchaniya Lk, Lombriser L, Garrote MP, Domínguez M, Samsonyan M, Pace M, Krššák M, Pookkillath MC, Peronaci M, Piani M, Raftogianni M, Vyas MJ, Michalopoulou M, Gogberashvili M, Klasen M, Cicoli M, Quartin M, Zumalacárregui M, Dimitrijević MS, Dordevic M, Karčiauskas M, Le Delliou M, Grimm N, Kozameh NA, Voicu N, Pop N, Chatzifotis N, Yunusov O, Piattella OF, Ferreira PdS, Raffai P, Schupp P, Ruiz-Lapuente P, Sahoo PK, Maluf RV, Durrer R, Kadam SA, Matarrese S, Brieden S, González-Gaitán S, Lohakare SV, Watson S, Wang SJ, Nunes SM, Chakrabarti S, Das S, Mukherjee S, Jurić T, Baker T, Nakas T, Barreiro T, Mukhopadhyay U, Vujčić V, Sagun V, Srećković VA, Zhang W, Toda Y, Piao YS, Davari Z (2025)
The standard model of cosmology has provided a good phenomenological description of a wide range of observations both at astrophysical and cosmological scales for several decades. This concordance model is constructed by a universal cosmological constant and supported by a matter sector described by the standard model of particle physics and a cold dark matter contribution, as well as very early-time inflationary physics, and underpinned by gravitation through general relativity. There have always been open questions about the soundness of the foundations of the standard model. However, recent years have shown that there may also be questions from the observational sector with the emergence of differences between certain cosmological probes. In this White Paper, we identify the key objectives that need to be addressed over the coming decade together with the core science projects that aim to meet these challenges. These discordances primarily rest on the divergence in the measurement of core cosmological parameters with varying levels of statistical confidence. These possible statistical tensions may be partially accounted for by systematics in various measurements or cosmological probes but there is also a growing indication of potential new physics beyond the standard model. After reviewing the principal probes used in the measurement of cosmological parameters, as well as potential systematics, we discuss the most promising array of potential new physics that may be observable in upcoming surveys. We also discuss the growing set of novel data analysis approaches that go beyond traditional methods to test physical models. These new methods will become increasingly important in the coming years as the volume of survey data continues to increase, and as the degeneracy between predictions of different physical models grows. There are several perspectives on the divergences between the values of cosmological parameters, such as the model-independent probes in the late Universe and model-dependent measurements in the early Universe, which we cover at length. The White Paper closes with a number of recommendations for the community to focus on for the upcoming decade of observational cosmology, statistical data analysis, and fundamental physics developments. [Figure presented]
Di Valentino, E., Said, J.L., Riess, A., Pollo, A., Poulin, V., Gómez-Valent, A.,... Davari, Z. (2025). The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics. Physics of the Dark Universe, 49. https://doi.org/10.1016/j.dark.2025.101965
MLA:
Di Valentino, Eleonora, et al. "The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics." Physics of the Dark Universe 49 (2025).