We define a linear bijection, h, between R4 and H(2), the set of complex 2 x 2 hermitian matrices, by t+x y – iz y + iz t- x (t, x, y, z) → We denote the matrix on the right-hand side by H. (i) Show that the matrix can be written as a linear combination of the Pauli spin matrices 01, 02, 03 and the identity matrix I2. (ii) Find the inverse map. (iii) Calculate the determinant of 2 x 2 hermitian matrix H. Discuss.
We define a linear bijection, h, between R4 and H(2), the set of complex 2 x 2 hermitian matrices, by t+x y – iz y + iz t- x (t, x, y, z) → We denote the matrix on the right-hand side by H. (i) Show that the matrix can be written as a linear combination of the Pauli spin matrices 01, 02, 03 and the identity matrix I2. (ii) Find the inverse map. (iii) Calculate the determinant of 2 x 2 hermitian matrix H. Discuss.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:We define a linear bijection, h, between R4 and H(2), the set of
complex 2 x 2 hermitian matrices, by
y – iz
t - x
t +x
(t, z, y, 2) → (,
y + iz
We denote the matrix on the right-hand side by H.
(i) Show that the matrix can be written as a linear combination of the Pauli
spin matrices 01, 02, 03 and the identity matrix I2.
(ii) Find the inverse map.
(iii) Calculate the determinant of 2 x 2 hermitian matrix H. Discuss.
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