Welcome to my research portal. As a physicist specializing in astrophysics and cosmology, my focus is on deciphering the mysteries of the early universe, dark matter, dark energy, and the Cosmic Microwave Background (CMB).
My work bridges a variety of topics, all contributing to our understanding of the universe’s origins and evolution. This includes correlating non-Gaussian signatures in the CMB to specific inflationary models, examining the distribution of dark matter through weak gravitational lensing, and the pursuit of primordial B-modes within the CMB polarization. These investigations serve as keys to unlock the secrets of the universe’s birth, rapid expansion, and the fundamental constituents of its cosmic structure
ACADEMIC JOURNEY
My academic journey began at the Indian Institute of Technology (IIT), where I pursued a major in physics from 1997 to 2002. Driven by a deep interest in understanding the universe, I continued my graduate studies in astrophysics at the University of Illinois at Urbana-Champaign(UIUC), where I delved into cutting-edge research and developed novel ways of probing the early Universe.
Upon completing my graduate studies, I embarked on a research journey, first at the Harvard University, followed by the Institute for Advanced Study (IAS), Princeton. Each experience allowed me to explore new dimensions in Cosmology & astrophysics and collaborate with some of the brightest minds in the field.
Since 2012, I have called San Diego my home and have had a longstanding association with the University of California, San Diego (UCSD). My journey at UCSD has been an enriching one, punctuated by a brief interlude from 2015 to 2020. During this time, I ventured into the world of finance, where I achieved financial stability and embraced the fulfilling role of parenthood.
Upon my return, I continued my pursuit of cosmological research, focusing on the Polarbear 2 experiment. This involved close collaboration with researchers at both UC San Diego and UC Berkeley.
Today, as a cosmologist and a proud parent, I balance the demands of research with family life, striving to contribute to the scientific community while nurturing the next generation’s curiosity about the cosmos. My involvement in research remains a part-time and fulfilling hobby, allowing me to explore the mysteries of the universe and seek answers to its most profound questions.
A Layman’s Guide to the Quest for Understanding in Physics and Cosmology
Physics and cosmology can be seen as a grand quest to uncover the hidden patterns that govern our universe. It’s a journey to understand the symphony of existence, which ranges from the smallest particles to the grandest galaxies. Imagine, if you will, a grand cosmic symphony. This symphony contains a vast range of notes – some so high they are barely audible, others so deep they rumble in our chests. Each phenomenon we observe,…
Keep readingWhy the Universe?
Lets argue on the lines of the anthropic principle, which suggests that the observed properties of the universe are the way they are because, if they were different, we wouldn’t be here to observe them. In other words, our existence as observers implies that certain conditions must be met for the universe to support life as we know it. One way to argue that the existence of the universe is not mysterious is to…
Keep readingSelected Publications:
“Primordial B-mode Diagnostics and Self Calibrating the CMB Polarization” Yadav, Su, and Zaldarriaga Phys.Rev.D81:063512,2010; arxiv.0912.3532
“A measurement of the cosmic microwave background B-mode polarization power spectrum at sub-degree scales with POLARBEAR“, The POLARBEAR Collaboration, Astrophysical Journal, 794:171, 2014; arXiv:1403.2369
“Fast estimator of primordial non-Gaussianity from temperature and polarization anisotropies in the cosmic microwave background” Yadav, Komatsu & Wendell, Astrophys.J.664:680-686, 2007; arXiv:astro-ph/0701921
“Constraining a spatially dependent rotation of the Cosmic Microwave Background Polarization” Yadav, Biswas, Su, and Zaldarriaga, Phys.Rev.D79:123009,2009; arXiv:0902.4466
“Evidence of Primordial Non-Gaussianity (fNL) in the Wilkinson Microwave Anisotropy Probe 3-Year Data at 2.8 sigma“, Yadav and Wendell, Phys.Rev.Lett.100:181301,2008; arXiv:0712.1148
“Self-calibration of cosmic microwave background polarization experiments” Brian Keating, Meir Shimon, and Amit Yadav, ApJ Letters 762 L23 (2012); arXiv:1211.5734
“Measurement of the cosmic microwave background polarization lensing power spectrum with the POLARBEAR experiment“, The POLARBEAR Collaboration, Physical review letters 113 (2), 021301; arXiv:1312.6646v2
“Constraining running non-Gaussianity” Sefusatti, Liguori, Yadav, Jackson, Pajer, JCAP 0912:022, (2009); arXiv:0906.0232v1
“Gravitational Lensing of the CMB: a Feynman Diagram Approach“, Jenkins, Manohar, Waalewijn, and Yadav, Physics Letters B 736, 6-10 (2014); arXiv:1403.2386v2
“POLARBEAR constraints on cosmic birefringence and primordial magnetic fields“, The POLARBEAR Collaboration, Phys. Rev. D 92, 123509 (2015); arXiv:1509.02461v2
“Temperature and polarization CMB maps from primordial non-Gaussianities of the local type“, Liguori, Yadav, Hansen, Komatsu, Matarrese, Wandelt, Phys.Rev.D76:105016, (2007); arXiv:0708.3786v3
“Primordial magnetism in the CMB: Exact treatment of Faraday rotation and WMAP7 bounds“, Pogosian, Yadav, Yi-Fung Ng, and Vachaspati, Phys.Rev.D84:043530, (2011); arXiv:1106.1438v3
“Evidence for gravitational lensing of the cosmic microwave background polarization from cross-correlation with the cosmic infrared background“, The POLARBEAR Collaboration, Physical review letters 112, 131302 (2014), arXiv:1312.6645v2
“Impact of Instrumental Systematic Contamination on the Lensing Mass Reconstruction using the CMB Polarization“, Meng Su, Amit Yadav, and Matias Zaldarriaga, Phys.Rev.D79:123002, (2009); arXiv:0901.0285
“Probing Inflation with CMB Polarization” CMBPol Mission Concept Study, Baumann at al., AIP Conf.Proc.1141:10-120, (2009); arXiv:0811.3919v2
“Non-Gaussianity as a Probe of the Physics of the Primordial Universe and the Astrophysics of the Low Redshift Universe“, Komatsu el al. arXiv:0902.4759
“Higher-Order Gravitational Lensing Reconstruction using Feynman Diagrams“, Jenkins, Manohar, Waalewijn, and Yadav, Journal of Cosmology and Astroparticle Physics 2014 (09), arXiv:1403.4607
“CMB lensing reconstruction in the presence of diffuse polarized foregrounds“, Yabebal Fantaye, Carlo Baccigalupi, Samuel Leach, Amit P. S. Yadav, Journal of Cosmology and Astroparticle Physics 12 (2012) 017; arXiv:1207.0508v2
“The Topology and Size of the Universe from CMB Temperature and Polarization Data“, Grigor Aslanyan, Aneesh V. Manohar, Amit P. S. Yadav, Journal of Cosmology and Astroparticle Physics 08 (2013) 009; arXiv:1304.1811v2
“Limits on Semiclassical Fluctuations in the Primordial Universe“, Grigor Aslanyan, Aneesh V. Manohar, Amit P. S. Yadav, Journal of Cosmology and Astroparticle Physics 02 (2013) 040, arXiv:1301.5641v2
“Revealing Cosmic Rotation“, Amit P. S. Yadav, Meir Shimon, Brian G. Keating, Physical review D: Particles and fields 86(8); arXiv:1207.6640v1
“Probing Primordial Magnetism with Off-Diagonal Correlators of CMB Polarization“, Amit P. S. Yadav, Levon Pogosian, Tanmay Vachaspati, Physical review D: Particles and fields 86 (2012) , arXiv:1207.3356v3
“An Improved Forecast of Patchy Reionization Reconstruction with CMB“, Meng Su, Amit P. S. Yadav, Matthew McQuinn, Jaiyul Yoo, Matias Zaldarriaga, arXiv:1106.4313v2
“Impact of Instrumental Systematics on the CMB Bispectrum“, Meng Su, Amit P.S. Yadav, Meir Shimon, Brian G. Keating, Phys.Rev.D83:103007,2011, arXiv:1010.1957v1
“Primordial Non-Gaussianity in the Cosmic Microwave Background“, Amit P. S. Yadav, Benjamin D. Wandelt; Advances in Astronomy, vol. 2010, Article ID 565248, arXiv:1006.0275v3
“CMB Tomography: Reconstruction of Adiabatic Primordial Scalar Potential Using Temperature and Polarization Maps“, Amit P. S. Yadav, Benjamin D. Wandelt, Phys.Rev. D71 (2005) 123004, arXiv:astro-ph/0505386v1
“EBEX: a balloon-borne CMB polarization experiment“, The EBEX Collaboration: Britt Reichborn-Kjennerud et al., Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy V; arXiv:1007.3672v1
“The Simons Array: expanding POLARBEAR to three multi-chroic telescopes” Kam Arnold et al., Proceedings of the SPIE, Volume 9153, id. 91531F 8 pp. (2014).
“Primordial magnetism in CMB B modes“, L Pogosian, T Vachaspati, A Yadav, Physical Review D 83 (10), 103007; arXiv:1210.0308v2
Amit Yadav 