[PAR] [TLE] Alan Guth [SEP] Alan Harvey Guth ( ; born February 27, 1947) is an American theoretical physicist and cosmologist.  Guth has researched elementary particle theory (and how particle theory is applicable to the early universe).  He is currently serving as Victor Weisskopf Professor of Physics at the Massachusetts Institute of Technology.  Along with Alexei Starobinsky and Andrei Linde, he won the 2014 Kavli Prize “for pioneering the theory of cosmic inflation.” [PAR] [TLE] Alexander Vilenkin [SEP] Alexander Vilenkin (Russian: Алекса́ндр Виле́нкин ,Ukrainian: Олександр Віленкін ; 13 May 1949, Kharkiv, Ukraine, Soviet Union) is Professor of Physics and Director of the Institute of Cosmology at Tufts University.  A theoretical physicist who has been working in the field of cosmology for 25 years, Vilenkin has written over 150 papers.  Soon after Paul Steinhardt presented the first example of eternal inflation, Vilenkin showed that eternal inflation is generic.  Working with Arvin Borde and Alan Guth, In 2003, he showed that a period of inflation has to have a beginning and there has to be a period that precedes it.  This is a problem because, without a theory to explain the conditions before inflation, it is not possible to determine how likely it is for inflation ever to occur.  Some considerations suggest that the probability is very small, resulting the "initial conditions problem.”
[PAR] [TLE] Alan Guth [ SEP ] Alan Harvey Guth ( ; born February 27 , 1947 ) is an American theoretical physicist and cosmologist . Guth has researched elementary particle theory ( and how particle theory is applicable to the early universe ) . He is currently serving as Victor Weisskopf Professor of Physics at the Massachusetts Institute of Technology . Along with Alexei Starobinsky and Andrei Linde , he won the 2014 Kavli Prize “ for pioneering the theory of cosmic inflation . ” [PAR] [TLE] Alexander Vilenkin [ SEP ] Alexander Vilenkin ( Russian : Алекса́ндр Виле́нкин , Ukrainian : Олександр Віленкін ; 13 May 1949 , Kharkiv , Ukraine , Soviet Union ) is Professor of Physics and Director of the Institute of Cosmology at Tufts University . A theoretical physicist who has been working in the field of cosmology for 25 years , Vilenkin has written over 150 papers . Soon after Paul Steinhardt presented the first example of eternal inflation , Vilenkin showed that eternal inflation is generic . Working with Arvin Borde and Alan Guth , In 2003 , he showed that a period of inflation has to have a beginning and there has to be a period that precedes it . This is a problem because , without a theory to explain the conditions before inflation , it is not possible to determine how likely it is for inflation ever to occur . Some considerations suggest that the probability is very small , resulting the " initial conditions problem . ”
When was the American theoretical physicist and cosmologist which Alexander Vilenkin worked with in 2013 born
When was the American theoretical physicist and cosmologist which Alexander Vilenkin worked with in 2013 born
February 27, 1947
February 27, 1947