Jogesh C. Pati (born 1937) is an Indian American

theoretical physicist Theoretical physics is a branch of physics that employs mathematical models and abstractions of physical objects and systems to rationalize, explain and predict natural phenomena. This is in contrast to experimental physics, which uses experime ...

at the

SLAC National Accelerator Laboratory SLAC National Accelerator Laboratory, originally named the Stanford Linear Accelerator Center, is a United States Department of Energy National Laboratory operated by Stanford University under the programmatic direction of the U.S. Departme ...

Biography

Jogesh Pati started his schooling at Guru Training School, Baripada and then admitted to M.K.C High School where he passed the Matriculation. He was admitted in MPC College and passed I Sc. Pati earned B.Sc. from Ravenshaw College, Utkal University in 1955; M.Sc. from

Delhi University Delhi University (DU), formally the University of Delhi, is a collegiate central university located in New Delhi, India. It was founded in 1922 by an Act of the Central Legislative Assembly and is recognized as an Institute of Eminence (IoE) ...

in 1957; and Ph.D. from

University of Maryland, College Park The University of Maryland, College Park (University of Maryland, UMD, or simply Maryland) is a public land-grant research university in College Park, Maryland. Founded in 1856, UMD is the flagship institution of the University System of M ...

in 1961. He is a professor emeritus at the

University of Maryland The University of Maryland, College Park (University of Maryland, UMD, or simply Maryland) is a public land-grant research university in College Park, Maryland. Founded in 1856, UMD is the flagship institution of the University System of M ...

in the

Maryland Center for Fundamental Physics The Maryland Center for Fundamental Physics (MCFP) is a research institute at the University of Maryland, College Park focused on theoretical physics. About The MCFP was founded in 2007 and is currently directed by Raman Sundrum. It is a subd ...

and physics department, which are part of the

University of Maryland College of Computer, Mathematical, and Natural Sciences The College of Computer, Mathematical, and Natural Sciences (CMNS) at the University of Maryland, College Park, is home to ten academic departments and a dozen interdisciplinary research centers and institutes. CMNS is one of 13 schools and colleg ...

. Pati has made pioneering contributions to the notion of a unification of

elementary particle In particle physics, an elementary particle or fundamental particle is a subatomic particle that is not composed of other particles. Particles currently thought to be elementary include electrons, the fundamental fermions ( quarks, leptons, a ...

s –

quarks A quark () is a type of elementary particle and a fundamental constituent of matter. Quarks combine to form composite particles called hadrons, the most stable of which are protons and neutrons, the components of atomic nuclei. All commonly ...

and

leptons In particle physics, a lepton is an elementary particle of half-integer spin (spin ) that does not undergo strong interactions. Two main classes of leptons exist: charged leptons (also known as the electron-like leptons or muons), and neutr ...

– and of their gauge forces force: weak,

electromagnetic In physics, electromagnetism is an interaction that occurs between particles with electric charge. It is the second-strongest of the four fundamental interactions, after the strong force, and it is the dominant force in the interactions o ...

, and strong. His formulation, carried out in collaboration with Nobel Laureate

Abdus Salam Mohammad Abdus Salam Salam adopted the forename "Mohammad" in 1974 in response to the anti-Ahmadiyya decrees in Pakistan, similarly he grew his beard. (; ; 29 January 192621 November 1996) was a Punjabi Pakistani theoretical physicist and a ...

, of the original gauge theory of quark–lepton unification, and their resulting insight that violations of

baryon In particle physics, a baryon is a type of composite subatomic particle which contains an odd number of valence quarks (at least 3). Baryons belong to the hadron family of particles; hadrons are composed of quarks. Baryons are also classif ...

and lepton numbers, especially those that would manifest in

proton decay In particle physics, proton decay is a hypothetical form of particle decay in which the proton decays into lighter subatomic particles, such as a neutral pion and a positron. The proton decay hypothesis was first formulated by Andrei Sakharov ...

, are likely consequences of such a unification, provide cornerstones of modern particle physics today. The suggestions of Pati and Salam (The

Pati–Salam model In physics, the Pati–Salam model is a Grand Unified Theory (GUT) proposed in 1974 by Abdus Salam and Jogesh Pati. Like other GUTs, its goal is to explain the seeming arbitrariness and complexity of the Standard Model in terms of a simpler, more f ...

) of the symmetry of SU(4)–color,

left-right symmetry A chiral phenomenon is one that is not identical to its mirror image (see the article on mathematical chirality). The spin of a particle may be used to define a handedness, or helicity, for that particle, which, in the case of a massless particle, ...

, and of the associated existence of right-handed

neutrinos A neutrino ( ; denoted by the Greek letter ) is a fermion (an elementary particle with spin of ) that interacts only via the weak interaction and gravity. The neutrino is so named because it is electrically neutral and because its rest mass is ...

, now provide some of the crucial ingredients for understanding the observed masses of the neutrinos and their oscillations.

Recognition

Pati was awarded the

Dirac Medal The Dirac Medal is the name of four awards in the field of theoretical physics, computational chemistry, and mathematics, awarded by different organizations, named in honour of Professor Paul Dirac, one of the great theoretical physicists of the 20 ...

for his seminal contributions to a "Quest for Unification" in the year 2000 along with

Howard Georgi Howard Mason Georgi III (born January 6, 1947) is an American theoretical physicist and the Mallinckrodt Professor of Physics and Harvard College Professor at Harvard University. He is also Director of Undergraduate Studies in Physics. He was Co-M ...

and

Helen Quinn Helen Rhoda Arnold Quinn (born 19 May 1943) is an Australian-born particle physicist and educator who has made major contributions to both fields. Her contributions to theoretical physics include the Peccei–Quinn theory which implies a corres ...

. In 2013, Pati was conferred the honor of

Padma Bhushan The Padma Bhushan is the third-highest civilian award in the Republic of India, preceded by the Bharat Ratna and the Padma Vibhushan and followed by the Padma Shri. Instituted on 2 January 1954, the award is given for "distinguished service ...

, the 3rd highest civilian award from the Govt. of India.

References

External links

University of Maryland Faculty Page

Symposium in honor of Jogesh Pati's 65th birthday
1937 births Living people Indian emigrants to the United States 21st-century American physicists Ravenshaw University alumni University of Maryland, College Park faculty Indian theoretical physicists People from Baripada Recipients of the Padma Bhushan in science & engineering Scientists from Odisha Odia people 20th-century Indian physicists Indian particle physicists {{US-physicist-stub

Biography

Recognition

See also

References

External links