NUMERICAL AND THEORETICAL STUDY OF THE CASIMIR FORCE CORRECTIONS BETWEEN TWO ROUGH SURFACES

H. Hassanzadeh (), A. A. Masoudi, S. Hosseinabadi () and M. Khorrami ()
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H. Hassanzadeh: Department of Physics, Alzahra University, Tehran 1993891167, Iran
A. A. Masoudi: Department of Physics, Alzahra University, Tehran 1993891167, Iran
S. Hosseinabadi: #x2020;Department of Physics, East Tehran Branch, Islamic Azad University, Tehran, Iran
M. Khorrami: Department of Physics, Alzahra University, Tehran 1993891167, Iran

Surface Review and Letters (SRL), 2020, vol. 27, issue 08, 1-6

Abstract: The Casimir force between two rough surfaces grown through statistical growth models is studied, both theoretically and numerically. The models include the random deposition (RD), the random deposition with surface relaxation (RDSR), and the restricted solid-on-solid growth (RSOS). To calculate the Casimir force, the pairwise summation (PWS) method in (2+1) dimensions is used. First, the force between two growing surfaces with RD equations, Edwards–Wilkinson, (EW) and Kardar–Parisi–Zhang (KPZ) equations is theoretically investigated. Then, using the Monte Carlo simulation, the rough surfaces with RD, RDSR, and RSOS models in (2+1) dimensions are simulated in different growth times, and the Casimir force between each pair of rough surfaces in each time step is calculated. The results show that the force between the surfaces increases as the roughness increases.

Keywords: Casimir force; rough surfaces (search for similar items in EconPapers)
Date: 2020
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DOI: 10.1142/S0218625X19501956

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