Quantum gravity in three dimensions, Witten spinors and the quantisation of length
نویسندگان
چکیده
منابع مشابه
Combinatorial quantisation of Euclidean gravity in three dimensions
In the Chern-Simons formulation of Einstein gravity in 2+1 dimensions the phase space of gravity is the moduli space of flat G-connections, where G is a typically non-compact Lie group which depends on the signature of space-time and the cosmological constant. For Euclidean signature and vanishing cosmological constant, G is the three-dimensional Euclidean group. For this case the Poisson struc...
متن کاملQuantisation without Witten Anomalies
It is argued that the gauge anomalies are only the artefacts of quantum field theory when certain subtleties are not taken into account. With the Berry's phase needed to satisfy certain boundary conditions of the generating path integral, the gauge anomalies associated with homotopically nontrivial gauge transformations are shown explicitly to be eliminated, without any extra quantum fields int...
متن کاملa comparative study of the theme of "marriage" in three victorian novelists: charles dickens, george eliot and thomas hardy
این تحقیق کوشیده است با انتخاب پنج رمان از میان آثار برگزیده، «چارلز دیکنز»، «جورج الیوت» و «توماس هاردی » و با رویکردی تطبیقی به بررسی درونمایه ی «ازدواج» در آثار این سه رمان نویس بزرگ دوره ی ویکتوریا بپردازد. فرضیه ی اولیه ی تحقیق این بوده است که چارلز دیکنز (1870- 1812) با زبانی شوخ و گزنده، جورج الیوت(1880- 1819) با نگاهی آموزشی–اندرزگونه و توماس هاردی(1928- 1840) با رویکردی تلخ وانتقادی به...
Causal Dynamical Triangulation of Quantum Gravity in Three Dimensions
The theory of causal dynamical triangulation in (2+1) dimensions is studied through the help of Monte Carlo simulations. The basic ideas behind this particular approach to quantum gravity are outlined in the paper. The numerical setup and the results from the simulations are presented and discussed. Based on the numerical results, the theory is shown to possess a non-trivial classical limit. Th...
متن کاملRenormalization of Quantum Gravity Coupled with Matter in Three Dimensions
In three spacetime dimensions, where no graviton propagates, pure gravity is known to be finite. It is natural to ask if finiteness survives the coupling with matter. Standard arguments do not ensure finiteness, but only that there exists a subtraction scheme where no Lorentz-Chern-Simons term is generated by radiative corrections. I consider gravity coupled with Chern-Simons U(1) gauge theory ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nuclear Physics B
سال: 2018
ISSN: 0550-3213
DOI: 10.1016/j.nuclphysb.2018.02.022