Elko spinor localized on branes as a candidate for dark matter

摘要: Recently, a new spin-1/2 fermionic quantum field with mass dimension one– Elko was introduced as candidate of dark matter. In this paper, we investigate the lcalization and spectra on Minkowski thick branes by presenting potentials corresponding Schodinger equations Kaluza-Klein (KK) modes. We categorize these into three cases find that there do not exist bound KK states mn ≥ 0 (mn are masses modes) for volcano potentials. There will some massive modes set continuous delocalized Poschl-Teller-like ones. For infinitely deep potentials, discrete all massive. cases, 4D massless spinor (zero mode) ground state (if it exists) is The conclusion support conjecture may be considered