Table 1 The winding numbers associated with the two chiral symmetries: (a) the case of two Majorana chains; (b) the case of three Majorana chains with \(|{t}_{1}^{^{\prime\prime} }| < |{t}_{2}^{^{\prime\prime} }|\) [the case with \(|{t}_{1}^{^{\prime\prime} }| > |{t}_{2}^{^{\prime\prime} }|\) is the same with (a)].
From: Topological superconductors from one-dimensional periodically modulated Majorana chains
(a) | ||
|t 1| < |t 2| | |t 1| > |t 2| | |
\(|{t}_{1}^{^{\prime} }| < |{t}_{2}^{^{\prime} }|\) | N = 0, N′ = 2 | N = −1, N′ = 1 |
\(|{t}_{1}^{^{\prime} }| > |{t}_{2}^{^{\prime} }|\) | N = 1, N′ = 1 | N = 0, N′ = 0 |
(b) | ||
|t 1| < |t 2| | |t 1| > |t 2| | |
\(|{t}_{1}^{^{\prime} }| < |{t}_{2}^{^{\prime} }|\) | N = 1, N′ = 3 | N = 0, N′ = 2 |
\(|{t}_{1}^{^{\prime} }| > |{t}_{2}^{^{\prime} }|\) | N = 2, N′ = 2 | N = 1, N′ = 1 |
