Ted Jacobson

{{Short description|American physicist}} {{Infobox scientist | name = Ted Jacobson | image = | caption = | birth_date = {{birth-date and age|November 27, 1954}} | birth_place = | residence = | death_date = | death_place = | field = Theoretical physics | erdos_number = | work_institution = University of Maryland | alma_mater = University of Texas at Austin | doctoral_advisor = Cécile DeWitt-Morette | doctoral_students = | known_for = Quantum gravity | societies = | prizes = | spouse = | children = | religion = | handedness = | website = [http://terpconnect.umd.edu/~jacobson/] | footnotes = }}

'''Theodore A.''' "'''Ted'''" '''Jacobson''' (born November 27, 1954) is an American theoretical physicist. He is known for his work on the connection between gravity and thermodynamics. In particular, in 1995 Jacobson proved that the Einstein field equations describing relativistic gravity can be derived from thermodynamic considerations.<ref name="Jacobson1995">Ted Jacobson, "Thermodynamics of Spacetime: The Einstein Equation of State", ''Physical Review Letters'', Vol. 75, Issue 7 (August 14, 1995), pp. 1260-1263, {{doi|10.1103/PhysRevLett.75.1260}}, {{bibcode|1995PhRvL..75.1260J}}. Also at {{arxiv|gr-qc/9504004}}, April 4, 1995. Also available [http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.54.6675 here] and [http://www.math.ohio-state.edu/~gerlach/jacobson/jacobson.ps here]. Additionally available as [http://www.gravityresearchfoundation.org/pdf/awarded/1995/jacobson.pdf an entry] in the Gravity Research Foundation's 1995 essay competition. [https://web.archive.org/web/20111001230201/http://www.gravityresearchfoundation.org/pdf/awarded/1995/jacobson.pdf Mirror link].</ref><ref name="Smolin2002">Lee Smolin, ''Three Roads to Quantum Gravity'' (New York, N.Y.: Basic Books, 2002), pp. 173 and 175, {{ISBN|0465078362}}, {{LCCN|2007310371}}.</ref>

Jacobson is professor of physics at the University of Maryland's Center for Fundamental Physics. His current research focuses on the dark energy problem and cosmic expansion.<ref name="Swarup2009">Bob Swarup, [http://www.fqxi.org/community/articles/display/109 "Much Ado About Nothing: Does the vacuum regenerate itself to fill the gaps as spacetime is pulled apart? Could a growing vacuum explain dark energy?"], ''FQXi Community'' (Foundational Questions Institute), May 8, 2009.</ref><ref name="ScientificCommonsTedJacobson">[http://en.scientificcommons.org/ted_jacobson "Ted Jacobson"], ''ScientificCommons''. A list of Jacobson's recent publications. {{dead link|date=October 2022}}</ref>

==See also==

*Entropic gravity

==References==

==External links== * Smithsonian/NASA Astrophysics Data System (ADS) [http://adsabs.harvard.edu/cgi-bin/nph-abs_connect?sim_query=YES&ned_query=YES&author=Jacobson%2C+Ted&nr_to_return=800 search for articles by Jacobson]. University of Nottingham [http://ukads.nottingham.ac.uk/cgi-bin/nph-abs_connect?sim_query=YES&ned_query=YES&author=Jacobson%2C+Ted&nr_to_return=800 mirror search]. * [http://www.umdphysics.umd.edu/index.php/about-us/people/faculty/155-jacobson.html "Jacobson, Theodore - Professor"] {{Webarchive|url=https://web.archive.org/web/20110720090639/http://www.umdphysics.umd.edu/index.php/about-us/people/faculty/155-jacobson.html |date=2011-07-20 }}, ''University of Maryland''. Contains [http://www.umdphysics.umd.edu/images/CV/jacobson_cv.pdf this link] {{Webarchive|url=https://web.archive.org/web/20161226212754/http://www.umdphysics.umd.edu/images/CV/jacobson_cv.pdf |date=2016-12-26 }} to Jacobson's curriculum vitae. * [http://terpconnect.umd.edu/~jacobson/ ''Ted Jacobson's Home Page''] at the University of Maryland. * [http://marcofrasca.wordpress.com/about/ Marco Frasca], [http://marcofrasca.wordpress.com/2009/03/05/ted-jacobsons-deep-understanding/ "Ted Jacobson's deep understanding"], ''The Gauge Connection'', March 5, 2009.

{{DEFAULTSORT:Jacobson, Theodore}} Category:1954 births Category:Living people Category:21st-century American physicists Category:University of Maryland, College Park faculty Category:American theoretical physicists