Rigorous peer-reviews are the basis of high-quality academic publishing. Thanks to the great efforts of our reviewers, Physics was able to maintain its standards for the high quality of its published papers. Thanks to the contribution of our reviewers, in 2021, the median time to first decision was 26 days and the median time to publication was 59 days. The editors would like to extend their gratitude and recognition to the following reviewers for their precious time and dedication, regardless of whether the papers they reviewed were finally published:
| Acioli, Paulo | Marshall, Jonathan P. |
| Acosta, Luis | Masson, Sophie |
| Alessandri, Ivano | Matis, Howard |
| Allaria, Enrico | Melnitchouk, Wally |
| Andrew, Keith | Mendonça, José Tito |
| Anochi, Juliana Aparecida | Miroshnichenko, Andrey |
| Arik, Sabri | Mladenov, Valeri |
| Atxitia, Unai | Moiseev, Nikita |
| Barioglio, Luca | Morel, Mathieu |
| Bartecki, Krzysztof | Morgan, Kyle |
| Barth, Ido | Mukdasai, Kanit |
| Bataller, Henri | Nakamura, Tatsufumi |
| Baxter, Daniel | Němeček, Zdeněk |
| Benáček, Jan | Niemeier, Ryan |
| Berdichevsky, Daniel Benjamin | Nowacki, Frederic |
| Berger, Kévin | Oblak, Blagoje |
| Blinov, Dmitry | Odintsov, Sergey |
| Bondar, Denys I. | Orlando, Elena |
| Bonilla, Luis L. | Otsuka, Takaharu |
| Borka Jovanović, Vesna | Owens, Joseph Francis |
| Bosch-Ramon, Valentí | Pandey, Rama Shankar |
| Botmart, Thongchai | Parvan, Alexandru |
| Bou-Ali, M. Mounir | Pastore, Saori |
| Braack, Malte | Patel, Hiren H. |
| Brax, Philippe | Pavsič, Matej |
| Brofferio, Chiara | Peixoto De Faria, José Geraldo |
| Cai, Zi | Petrov, Albert |
| Calixto, Sergio | Pinto, Marcus Emmanuel Benghi |
| Capistrano, Abraao J. S. | Pirner, Hans Jürgen |
| Capone, Florinda | Poirier, Yannick |
| Carinena, Jose F. | Potrebić, Milka |
| Castrejon-Pita, Rafael | Prokudin, Alexei |
| Česnavičius, Ramūnas | Pyarelal, Adarsh |
| Chattopadhyay, Surojit | Qi, Chong |
| Chen, Liang | Qian, Yibin |
| Chen, Wenge | Ramos, Sergio Mendoza |
| Chen, Zengqiang | Rasool, Ghulam |
| Chinnici, Marta | Ravera, Lucrezia |
| Cieśliński, Jan L. | Rees, Andrew |
| Contreras, Ivan | Rodríguez Zepeda, Rosalío Fernando |
| De Lucas, Javier | Romano, Daniele |
| Dell′Oro, Stefano | Rossi, Andrea Renato |
| Deppman, Airton | Saez-Chillon Gomez, Diego |
| Deriglazov, Alexei | Sahoo, Raghunath |
| Di Mauro, Marco | Sakai, Takeshi |
| Diddens, Christian | Sakharov, Alexander S. |
| Doi, Takahiro | Sampaio, Marcos |
| Dreher, Wolfgang | Sargsian, Misak |
| Eaton, John K. | Schamel, Hans |
| Ejiri, Hiroyasu | Seidewitz, Ed |
| Eliasson, Bengt | Sellountos, Euripides |
| Feiginov, Michael | Sergi, Pier Nicola |
| Fiorenza, Patrick | Sexty, Dénes |
| Forbes, Larry | Shapiro, Ilya |
| Freeman, Sean | Sharapova, Polina |
| Fring, Andreas | Shatashvili, Nana |
| Gay-Balmaz, François | Shevchuk, Igor V. |
| Gazda, Piotr | Shimizu, Noritaka |
| González Romero, Luis Manuel | Shlosman, Isaac |
| Gromov, Victor | Siciliano, Marco |
| Gruzinov, Andrei | Simard, Laurent |
| Guo, Bin | Solov′ev, Alexander A. |
| Guzzi, Marco | Soma, Arun Kumar |
| Hamdaoui, Mohamed | Sreckovic, Vladimir A. |
| Han, Jianing | Stand, Luis |
| Han, Shiang-Yi | Stenflo, Lennart |
| Hawrami, Rastgo | Su, Wu-Chung |
| Heikinheimo, Matti | Sun, Liangting |
| Hu, Baishan | Suyama, Teruaki |
| Ichimoto, Kiyoshi | Tanaka, Masahiro |
| Imre, Sandor | Tanimoto, Jun |
| Incicchitti, Antonella | Taube, Andrzej |
| Jevicki, Antal | Tawfik, Abdel Nasser |
| Johnson, Calvin | Tennie, Felix |
| Kang, Jianhong | Tirozzi, Brunello |
| Karpenko, Iurii | Tomei, Claudia |
| Kasetti, Siva Prasad | Torres-Torres, Carlos |
| Kawamoto, Shoichi | Trippe, Sascha |
| Kazak, Anatoliy N. | Tsiotas, Dimitrios |
| Kim, HongJoo | Tuomisto, Filip |
| Kim, Yeongduk | Van Der Hoorn, Pim |
| Kis, Zsolt | Van Isacker, Piet |
| Knetsch, Alexander | Vasko, Ivan Y. |
| Kneur, Jean-Loïc | Veermäe, Hardi |
| Kota, Jozsef | Veltri, Alessandro |
| Kota, Mizushima | Vermeeren, Mats |
| Kowal, Grzegorz | Versteegh, Marijn |
| Krapivsky, Pavel L. | Vilariño, Silvia |
| Krasnov, Kirill | Walters, William |
| Kroesen, Michiel | Wang, Ning |
| Kuznetsov, Evgenii A. | Weiss, Christian H. |
| Lambiase, Gaetano | Wellenhofer, Corbinian |
| Land, Martin | Williams, Stuart J. |
| Langfeld, Kurt | Xu, Jun |
| Laroze, David | Xu, Peng |
| Larsen, Arne Lykke | Yang, Jin-Kyu |
| Lattimer, Jim | Yang, Run-Qiu |
| Lavagno, Andrea | Yefremov, Alexander |
| Lavrinenko, Andrei | Yin, Chao |
| Li, Sitai | Yokus, Asif |
| Liang, Shidong | Yusofi, Ebrahim |
| Lin, Zhe | Zakharov, Alexander F. |
| Linares, Roberto | Zen, Heishun |
| Lipatov, Alexey | Zhang, Huaiwu |
| Liu, Fu-Hu | Zhang, Xiangdong |
| Liu, Yong | Zhao, Wen |
| Lujan, Paul Joseph | Zhirkin, Alexey |
| Luo, Shunlong | Zhuang, Xiaoying |
| Luque, Rafael | Zia, Haider |
| Ma, Yiping | Ziaeepour, Houri |
| Majid, Mohsenzadeh | Ziebell, Luiz Fernando |
| Mamou, Mahmoud | Znojil, Miloslav |
| Mancas, Ciprian Stefan | Župan, Tomislav |
| Mann, Robert | Zuzel, Grzegorz |
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