Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Lattice Hamiltonian approach to the massless Schwinger model
T2 - precise extraction of the mass gap
AU - Cichy, Krzysztof
AU - Kujawa-Cichy, Agnieszka
AU - Szyniszewski, Marcin
PY - 2013/7
Y1 - 2013/7
N2 - We present results of applying the Hamiltonian approach to the massless Schwinger model. A finite basis is constructed using the strong coupling expansion to a very high order. Using exact diagonalization, the continuum limit can be reliably approached. This allows to reproduce the analytical results for the ground state energy, as well as the vector and scalar mass gaps to an outstanding precision better than 10^−6%.
AB - We present results of applying the Hamiltonian approach to the massless Schwinger model. A finite basis is constructed using the strong coupling expansion to a very high order. Using exact diagonalization, the continuum limit can be reliably approached. This allows to reproduce the analytical results for the ground state energy, as well as the vector and scalar mass gaps to an outstanding precision better than 10^−6%.
KW - Schwinger model
KW - lattice field theory
KW - hamiltonian approach
KW - ground state
KW - mass gap
U2 - 10.1016/j.cpc.2013.02.010
DO - 10.1016/j.cpc.2013.02.010
M3 - Journal article
VL - 184
SP - 1666
EP - 1672
JO - Computer Physics Communications
JF - Computer Physics Communications
SN - 0010-4655
IS - 7
ER -