|
|
|
|
| LEADER |
01591 am a22002053u 4500 |
| 001 |
111644 |
| 042 |
|
|
|a dc
|
| 100 |
1 |
0 |
|a Walters, Matthew
|e author
|
| 100 |
1 |
0 |
|a Massachusetts Institute of Technology. Department of Mathematics
|e contributor
|
| 100 |
1 |
0 |
|a Genest, Vincent
|e contributor
|
| 700 |
1 |
0 |
|a Khandker, Zuhair U.
|e author
|
| 700 |
1 |
0 |
|a Walters, Matthew T.
|e author
|
| 700 |
1 |
0 |
|a Genest, Vincent
|e author
|
| 245 |
0 |
0 |
|a RG flow from ϕ⁴ theory to the 2D Ising model
|
| 260 |
|
|
|b Springer Berlin Heidelberg,
|c 2017-09-26T18:52:54Z.
|
| 856 |
|
|
|z Get fulltext
|u http://hdl.handle.net/1721.1/111644
|
| 520 |
|
|
|a We study 1+1 dimensional ϕ⁴ theory using the recently proposed method of conformal truncation. Starting in the UV CFT of free field theory, we construct a complete basis of states with definite conformal Casimir, C. We use these states to express the Hamiltonian of the full interacting theory in lightcone quantization. After truncating to states with C ≤ C[subscript max], we numerically diagonalize the Hamiltonian at strong coupling and study the resulting IR dynamics. We compute non-perturbative spectral densities of several local operators, which are equivalent to real-time, infinite-volume correlation functions. These spectral densities, which include the Zamolodchikov C-function along the full RG flow, are calculable at any value of the coupling. Near criticality, our numerical results reproduce correlation functions in the 2D Ising model.
|
| 520 |
|
|
|a United States. Department of Energy (Grant DE-SC0015845)
|
| 655 |
7 |
|
|a Article
|
| 773 |
|
|
|t Journal of High Energy Physics
|
