|
Georgi Dvali
Georgi (Gia) Dvali (Georgian: გიორგი (გია) დვალი; born May 30, 1964) is a Georgian theoretical physicist and science communicator in Georgia. He is a professor of theoretical physics at the Ludwig Maximilian University of Munich, a director at the Max Planck Institute for Physics in Munich, and holds a Silver Professorship Chair at the New York University. His research interests include String theory, Extra dimensions, Quantum gravity, and the Early universe. Dvali is considered to be one of the world's leading experts in the field of particle physics. Among his many contributions stand his pioneering works on Large extra dimensions and the DGP model of modified gravity. In 2008, Dvali was awarded the Alexander von Humboldt Professorship. Early life and education Georgi Dvali was born on May 30, 1964, in Tbilisi. He graduated from the 55th secondary school of Tbilisi and continued his studies at the Faculty of Physics of Tbilisi State Universi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tbilisi
Tbilisi ( ; ka, თბილისი ), in some languages still known by its pre-1936 name Tiflis ( ), is the Capital city, capital and the List of cities and towns in Georgia (country), largest city of Georgia (country), Georgia, lying on the banks of the Kura (Caspian Sea), Kura River with a population of approximately 1.5 million people. Tbilisi was founded in the 5th century Anno Domini, AD by Vakhtang I of Iberia, and since then has served as the capital of various Georgian kingdoms and republics. Between 1801 and 1917, then part of the Russian Empire, Tiflis was the seat of the Caucasus Viceroyalty (1801–1917), Caucasus Viceroyalty, governing both the North Caucasus, northern and the Transcaucasia, southern parts of the Caucasus. Because of its location on the crossroads between Europe and Asia, and its proximity to the lucrative Silk Road, throughout history Tbilisi was a point of contention among various global powers. The city's location to this day ensures its p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Georgian Language
Georgian (, , ) is the most widely-spoken Kartvelian language, and serves as the literary language or lingua franca for speakers of related languages. It is the official language of Georgia and the native or primary language of 87.6% of its population. Its speakers today number approximately four million. Classification No claimed genetic links between the Kartvelian languages and any other language family in the world are accepted in mainstream linguistics. Among the Kartvelian languages, Georgian is most closely related to the so-called Zan languages (Megrelian and Laz); glottochronological studies indicate that it split from the latter approximately 2700 years ago. Svan is a more distant relative that split off much earlier, perhaps 4000 years ago. Dialects Standard Georgian is largely based on the Kartlian dialect. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Savas Dimopoulos
Savas Dimopoulos (; el, Σάββας Δημόπουλος; born 1952) is a particle physicist at Stanford University. He worked at CERN from 1994 to 1997. Dimopoulos is well known for his work on constructing theories beyond the Standard Model. Life He was born an ethnic Greek in Istanbul, Turkey and later moved to Athens due to ethnic tensions in Turkey during the 1950s and 1960s. Education and career Dimopoulos studied as an undergraduate at the University of Houston. He went to the University of Chicago and studied under Yoichiro Nambu for his doctoral studies. After completing his Ph.D. in 1979, he briefly went to Columbia University before taking a faculty position at Stanford University in 1980. During 1981 and 1982 he was also affiliated with the University of Michigan, Harvard University and the University of California, Santa Barbara. From 1994 to 1997 he was on leave from Stanford University and was employed by CERN. Dimopoulos is well known for his work on construct ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nima Arkani-Hamed
Nima Arkani-Hamed ( fa, نیما ارکانی حامد; born April 5, 1972) is an American-Canadian "Curriculum Vita, updated 4-17-15" sns.ias.edu; accessed December 4, 2015. of Iranian descent, with interests in , quantum fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ADD Model
In particle physics and string theory (M-theory), the ADD model, also known as the model with large extra dimensions (LED), is a model framework that attempts to solve the hierarchy problem. (''Why is the force of gravity so weak compared to the electromagnetic force and the other fundamental forces?'') The model tries to explain this problem by postulating that our universe, with its four dimensions (three spatial ones plus time), exists on a membrane in a higher dimensional space. It is then suggested that the other forces of nature (the electromagnetic force, strong interaction, and weak interaction) operate within this membrane and its four dimensions, while the hypotethical gravity-bearing particle graviton can propagate across the extra dimensions. This would explain why gravity is very weak compared to the other fundamental forces. The size of the dimensions in ADD is around the order of the TeV scale, which results in it being experimentally probeable by current colliders, u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Pisa
The University of Pisa ( it, Università di Pisa, UniPi), officially founded in 1343, is one of the oldest universities in Europe. History The Origins The University of Pisa was officially founded in 1343, although various scholars place its origins in the 11th century. It is certain, however, that from the middle of the 12th century Pisa had a “Universitas” in the original sense of the word, that is, a group of students who gathered around masters. It was during this period that Leonardo Fibonacci was born and worked. He was one of the greatest mathematicians in history who, through his work, synthesized the spirit and processes of Greek geometry and the tools of Arabic mathematics for the first time in Europe. The papal seal “In Supremae dignitatis”, issued by Pope Clement VI on 3 September 1343, granted the Studium in Pisa the title of Studium Generale with various exclusive privileges, making it universally recognised. In medieval times, the Studium Generale wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Center For Theoretical Physics
The Abdus Salam International Centre for Theoretical Physics (ICTP) is an international research institute for physical and mathematical sciences that operates under a tripartite agreement between the Italian Government, United Nations Educational, Scientific and Cultural Organization (UNESCO), and International Atomic Energy Agency (IAEA). It is located near the Miramare Park, about 10 kilometres from the city of Trieste, Italy. The centre was founded in 1964 by Pakistani Nobel Laureate Abdus Salam. ICTP is part of the Trieste System, a network of national and international scientific institutes in Trieste, promoted by the Italian physicist Paolo Budinich. Mission * Foster the growth of advanced studies and research in physical and mathematical sciences, especially in support of excellence in developing countries; * Develop high-level scientific programmes keeping in mind the needs of developing countries, and provide an international forum of scientific contact for scientist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elephter Andronikashvili
Elephter Luarsabovich Andronikashvili (the first name sometimes spelled Elevter or Elefter, ka, ელეფთერ ანდრონიკაშვილი, russian: Элевтер Луарсабович Андроникашвили; – 9 September 1989) was a Georgian physicist. He was a brother of Russian historian Irakly Andronikov. Biography Elephter Andronikashvili came from the noble Georgian Andronikashvili family. He graduated from Leningrad Polytechnical Institute in 1932. From 1934 to 1945 he lectured at Tbilisi State University. Starting in 1942 he worked for the Georgian Academy of Sciences Institute of Physics, and in 1951 he became the director of the Institute. In 1940-1941 and 1945-1948 he also did his Doktor Nauk degree at the Institute for Physical Problems in Moscow. From 1951 he also worked as a head of a department and a Professor of Tbilisi State University. Andronikashvili received Stalin Prize in 1952 for his works on superfluidity and USSR State ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Large Extra Dimensions
In particle physics and string theory (M-theory), the ADD model, also known as the model with large extra dimensions (LED), is a model framework that attempts to solve the hierarchy problem. (''Why is the force of gravity so weak compared to the electromagnetic force and the other fundamental forces?'') The model tries to explain this problem by postulating that our universe, with its four dimensions (three spatial ones plus time), exists on a membrane in a higher dimensional space. It is then suggested that the other forces of nature (the electromagnetic force, strong interaction, and weak interaction) operate within this membrane and its four dimensions, while the hypotethical gravity-bearing particle graviton can propagate across the extra dimensions. This would explain why gravity is very weak compared to the other fundamental forces. The size of the dimensions in ADD is around the order of the TeV scale, which results in it being experimentally probeable by current colliders, u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Early Universe
The chronology of the universe describes the history and future of the universe according to Big Bang cosmology. Research published in 2015 estimates the earliest stages of the universe's existence as taking place 13.8 billion years ago, with an uncertainty of around 21 million years at the 68% confidence level. The Planck Collaboration in 2015 published the estimate of 13.799 ± 0.021 billion years ago (68% confidence interval). See PDF: page 32, Table 4, Age/Gyr, last column. Outline Chronology in five stages For the purposes of this summary, it is convenient to divide the chronology of the universe since it originated, into five parts. It is generally considered meaningless or unclear whether time existed before this chronology: The very early universe The first picosecond (10−12) of cosmic time. It includes the Planck epoch, during which currently established laws of physics may not apply; the emergence in stages of the four known fundamental interactions or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quantum Gravity
Quantum gravity (QG) is a field of theoretical physics that seeks to describe gravity according to the principles of quantum mechanics; it deals with environments in which neither gravitational nor quantum effects can be ignored, such as in the vicinity of black holes or similar compact astrophysical objects, such as neutron stars. Three of the four fundamental forces of physics are described within the framework of quantum mechanics and quantum field theory. The current understanding of the fourth force, gravity, is based on Albert Einstein's general theory of relativity, which is formulated within the entirely different framework of classical physics. However, that description is incomplete: describing the gravitational field of a black hole in the general theory of relativity leads physical quantities, such as the spacetime curvature, to diverge at the center of the black hole. This signals the breakdown of the general theory of relativity and the need for a theory that goes b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extra Dimensions
In physics, extra dimensions are proposed additional space or time dimensions beyond the (3 + 1) typical of observed spacetime, such as the first attempts based on the Kaluza–Klein theory. Among theories proposing extra dimensions are: * Large extra dimension, mostly motivated by the ADD model, by Nima Arkani-Hamed, Savas Dimopoulos, and Gia Dvali in 1998, in an attempt to solve the hierarchy problem. This theory requires that the fields of the Standard Model are confined to a four-dimensional membrane, while gravity propagates in several additional spatial dimensions that are large compared to the Planck scale.For a pedagogical introduction, see * Warped extra dimensions, such as those proposed by the Randall–Sundrum model (RS), based on warped geometry where the universe is a five-dimensional anti-de Sitter space and the elementary particles except for the graviton are localized on a (3 + 1)-dimensional brane or branes. * Universal extra dimension, propo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
_-_Georgian_language_alphabet.png "Click for more on -> Georgian Language"){kind=spacer}
