Anthony James Leggett (born March 26, 1938), is Professor of Physics at the University of Illinois in Urbana-Champaign. He is widely recognized as a world leader in the theory of low-temperature physics, and his pioneering work on superfluidity was recognized by the 2003 Nobel Prize in Physics. He has shaped the theoretical understanding of normal and superfluid helium liquids and other strongly coupled superfluids. He set directions for research in the quantum physics of macroscopic dissipative systems and use of condensed systems to test the foundations of quantum mechanics. March 26 is the 85th day of the year in the Gregorian Calendar (86th in leap years). ... 1938 was a common year starting on Saturday (link will take you to calendar). ... Physics (from the Greek, φυσικός (physikos), natural, and φύσις (physis), Nature) is the science of Nature in the broadest sense. ... The University of Illinois is the set of three public universities in Illinois. ... Superfluidity is a phase of matter characterised by the complete absence of viscosity. ... List of Nobel Prize laureates in Physics from 1901 to the present day. ... A dissipative system (or dissipative structure) is an open system which is operating far from thermodynamic equilibrium within an environment that exchanges energy, matter or entropy. ... Fig. ...

He is a member of the National Academy of Sciences, the American Philosophical Society, the American Academy of Arts and Sciences, the Russian Academy of Sciences (foreign member), and is a Fellow of the Royal Society (U.K.), the American Physical Society, and the American Institute of Physics. He is an Honorary Fellow of the Institute of Physics (U.K.). The National Academy of Sciences (NAS) in the United States is a government-established corporation supporting scientific research. ... The American Philosophical Society, founded in 1743 by Benjamin Franklin, continues to operate to this day. ... The American Academy of Arts and Sciences is an organization dedicated to scholarship and the advancement of learning, particularly in areas of political science. ... Russian Academy of Sciences (Росси́йская Акаде́мия Нау́к) is the national academy of Russia. ... The Royal Society of London is claimed to be the oldest learned society still in existence and was founded in 1660. ... The American Physical Society was founded in 1899 and is the worlds largest organization of physicists. ... The Institute of Physics (IOP) is the United Kingdoms professional body for physicists. ...

His current research focuses on cuprate superconductivity, conceptual issues in the foundations of quantum mechanics, and superfluidity in highly degenerate atomic gases. Superconductivity is a phenomenon occurring in certain materials at low temperatures, characterised by the complete absence of electrical resistance and the damping of the interior magnetic field (the Meissner effect. ... Fig. ... Superfluidity is a phase of matter characterised by the complete absence of viscosity. ... An atomic gas is a gas of atoms, as opposed to molecules. ...

External Links

• UIUC Faculty page (http://www.physics.uiuc.edu/People/Faculty/profiles/Leggett/)