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Home > Nuclear Physics B (Elsevier) > Entanglement entropy at higher orders for the states of a = 3 θ = 1 Lifshitz theory |

Mishra, Rohit (Theory Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata, 700064, India) (Homi Bhabha National Institute, Anushakti Nagar, Mumbai, 400094, India) ; Singh, Harvendra (Theory Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata, 700064, India) (Homi Bhabha National Institute, Anushakti Nagar, Mumbai, 400094, India)

23 November 2018

**Abstract: **We evaluate the entanglement entropy of strips for boosted D3-black-branes compactified along the lightcone coordinate. The bulk theory describes 3-dimensional a=3 θ=1 Lifshitz theory on the boundary. The area of small strips is evaluated perturbatively up to second order, where the leading term has a logarithmic dependence on strip width l , whereas entropy of the excitations is found to be proportional to l4 . The entanglement temperature falls off as 1/l3 on expected lines. The size of the subsystem has to be bigger than typical ‘Lifshitz scale’ in the theory. At second order, the redefinition of temperature (or strip width) is required so as to meaningfully describe the entropy corrections in the form of a first law of entanglement thermodynamics.

**Published in: ****Nuclear Physics B 938 (2019) 307-320**
**DOI: **10.1016/j.nuclphysb.2018.11.012

**License: **CC-BY-3.0