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4 Oct 2023: and interpret this result. Evaluate [X(t),P(t)]. 4. A Fermi oscillator has Hilbert space H = C2 and Hamiltonian H = B†B, where B2 = 0 and. ... B†B BB† = 1 (the anti commutator). Find the eigenvalues of H.

4 Jan 2024: ELECTROMAGNETISM Examples 2 Lent 2024. 1. A uniform magnetic field points along the z-axis: B = B ez. ... A uniform vertical magnetic field B = B(t) ez is applied for time t > 0.

10 Oct 2023: a) Write the group multiplication table for D4. (b) What are the subgroups of D4? ... t(A B) t2. 2[A, B]. t3. 12{[A, [A, B]] [B, [B, A]]}. ).

9 Jan 2024: f(x) = constant. Show that B ( B) = 0. The tangent vector at each point on a curve is parallel to a non-vanishing vector. ... Evaluate the divergence and curl of the following:. rx, a(x b), a x, x/r3,.

9 Jan 2024: f(x) = constant. Show that B (B) = 0. The tangent vector at each point on a curve is parallel to a non-vanishing vector. ... U =1. 2. (ε0|E|2. 1. µ0|B|2. ), P =. 1. µ0EB.

10 Oct 2023: How do your equations behave when the points a, b or c are interchanged? ... a b, b c, c a ] = [a, b, c]2.

1 Nov 2023: det M = (a b)(b c)(c a)(ab bc ca). [Recall: the value of a determinant is unchanged if a multiple of one row is added to another row.]. ... a0tn ). Hint: Use properties of the determinant such as det(A) det(B) = det(AB).

18 Jan 2024: from which we found the scattering data for the potential 2m2sech2mx was R(k) = 0and λ1 = κ21 = m2 and c1 =. 2m. Now by considering B = x 2mtanhmx and. B† = x 2mtanhmx , ... and computing BB† and B†B, find the scattering data forthe potential

24 Nov 2023: Sheet 1, 4c):. (aI b σ)(a′I b′ σ) = (aa′ b b′)I (ab′ a′b ib b′) σ. ... b) Show that(. 1 1. 2σ δv. ). B(ψ,n) = B(ψ′,n′)R,.

25 Oct 2023: In general, the linear ODE system is of the form. u′ = Au b, u(0) = u0, (2.22). ... Note that our analysis should accommodate b = b(t), since boundary conditions might vary intime!