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Spherical harmonic at 1=1 and m=-1 is an eigen function for the hamiltonian of the rigid...
4- FOR a Quartun harmonic oscillator OF MASS M, Show That The FUNCTION f(x)= x ě...
4- FOR a Quartun harmonic oscillator OF MASS M, Show That The FUNCTION f(x)= x ě * 2 is EIGENFUNCTION Of The Hamiltonian. Give The genualue, Alue. x= (mk) Esln+ 1 l hv 2 -- For The 37 Excited STATE of the RiGiD ROTOR calculate the energy, the Angular momentul & Lz .
4. (30 points) Harmonic oscillator with perturbation Recall the Hamiltonian of an harmonic oscillator in 1D:...
4. (30 points) Harmonic oscillator with perturbation Recall the Hamiltonian of an harmonic oscillator in 1D: p21 ÃO = + mwf?, where m is the mass of the particle and w is the angular frequency. Now, let us perturb the oscillator with a quadratic potential. The perturbation is given by Î' = zgmw?h?, where g is a dimensionless constant and g <1. (a) Write down the eigen-energies of the unperturbed Hamiltonian. (b) In Lecture 3, we introduced the lowering (or...
Rotational states of a diatomic molecule can be approximated by those of a rigid rotor. The hamil...
Rotational states of a diatomic molecule can be approximated by those of a rigid rotor. The hamiltonian of a rigid rotor is given by hrotor 12/21, where L2 is the operator for square of angular momentum and I the moment of inertia. The eigenvalues and eigenfunctions of L2 are known: Lylnu =t(1+1)ay," , where m.--1, , +1 a) Calculate the canonical partition function : of a rigid rotor. Hint: Replace summation over by integral. b) What is the probability that...
Quantum Mechanics: (Angular momentum) Write down the Hamiltonian of a rigid body in terms of angular...
Quantum Mechanics:
(Angular momentum) Write down the Hamiltonian of a rigid body in terms of angular momentum operators and the principal moments of inertia. Discuss the commutation relations for both space-fixed axes and body-fixed axes. Discuss the special case-spherical top, obtain the eigenvalues of the Hamiltonian for the spherical top.
3. Consider a rigid rotor whose Hamiltonian is given by H L2(21) where L is the angular momentum operator and I is the...
3. Consider a rigid rotor whose Hamiltonian is given by H L2(21) where L is the angular momentum operator and I is the moment of inertia of the rotator. Its rotation is described by a wave function: (0, N{Yo0(0,6)(1 3i) Y1-1(0,6) 2 Y21(0.0) Y20(0.) Find the normalization constant, N. (i) Find the probability to occupy state Yo0- (ii Find the expectation value of L2 of this state (iii Find the expectation value of L2 of this state (iv) Find (L2L2/21...
Question A2: Coherent states of the harmonic oscillator Consider a one-dimensional harmonic oscillator with the Hamiltonian...
Question A2: Coherent states of the harmonic oscillator Consider a one-dimensional harmonic oscillator with the Hamiltonian 12 12 m2 H = -2m d. 2+ 2 Here m and w are the mass and frequency, respectively. Consider a time-dependent wave function of the form <(x,t) = C'exp (-a(x – 9(t)+ ik(t)z +io(t)), where a and C are positive constants, and g(t), k(t), and o(t) are real functions of time t. 1. Express C in terms of a. [2 marks] 2. By...
QUESTION ABOUT RIGID ROTOR. PHYSICAL CHEMISTRY II Generate the wavefunction for a rigid rotor with quantum numbers m=1 and l=1.
QUESTION ABOUT RIGID ROTOR. PHYSICAL CHEMISTRY II Generate the wavefunction for a rigid rotor with quantum numbers m=1 and l=1.
The Hamiltonian of a harmonic oscillator is: 2m 2 Show that: (1) [ł, î] =ihp ()...
The Hamiltonian of a harmonic oscillator is: 2m 2 Show that: (1) [ł, î] =ihp () [f.h]=-ihmoʻx
2. Consider a particle of mass M attached to a rigid massless rod of fixed length...
2. Consider a particle of mass M attached to a rigid massless rod of fixed length R whose other end is fixed at the origin. The rod is free to rotate about its fixed point. (a) Give an argument why the Hamiltonian for the system may be written as 21 21 with/-MR2 (b) If the particle carries charge q, and the rotor is placed in a constant magnetic field B, what is the modified Hamiltonian? (e) What is the energy...
The wave function for a harmonic oscillator in its first excited state is Consider the harmonic o...
The wave function for a harmonic oscillator in its first excited state is Consider the harmonic oscillator with Hamiltonian and let H --hk and r-cr d. Evaluate E0) for the first excited state using perturbation theory 2m dx 2
The wave function for a harmonic oscillator in its first excited state is Consider the harmonic oscillator with Hamiltonian and let H --hk and r-cr d. Evaluate E0) for the first excited state using perturbation theory 2m dx 2
4- FOR a Quartun harmonic oscillator OF MASS M, Show That The FUNCTION f(x)= x ě * 2 is EIGENFUNCTION Of The Hamiltonian. Give The genualue, Alue. x= (mk) Esln+ 1 l hv 2 -- For The 37 Excited STATE of the RiGiD ROTOR calculate the energy, the Angular momentul & Lz .
4. (30 points) Harmonic oscillator with perturbation Recall the Hamiltonian of an harmonic oscillator in 1D: p21 ÃO = + mwf?, where m is the mass of the particle and w is the angular frequency. Now, let us perturb the oscillator with a quadratic potential. The perturbation is given by Î' = zgmw?h?, where g is a dimensionless constant and g <1. (a) Write down the eigen-energies of the unperturbed Hamiltonian. (b) In Lecture 3, we introduced the lowering (or...
Rotational states of a diatomic molecule can be approximated by those of a rigid rotor. The hamiltonian of a rigid rotor is given by hrotor 12/21, where L2 is the operator for square of angular momentum and I the moment of inertia. The eigenvalues and eigenfunctions of L2 are known: Lylnu =t(1+1)ay," , where m.--1, , +1 a) Calculate the canonical partition function : of a rigid rotor. Hint: Replace summation over by integral. b) What is the probability that...
Quantum Mechanics:
(Angular momentum) Write down the Hamiltonian of a rigid body in terms of angular momentum operators and the principal moments of inertia. Discuss the commutation relations for both space-fixed axes and body-fixed axes. Discuss the special case-spherical top, obtain the eigenvalues of the Hamiltonian for the spherical top.
3. Consider a rigid rotor whose Hamiltonian is given by H L2(21) where L is the angular momentum operator and I is the moment of inertia of the rotator. Its rotation is described by a wave function: (0, N{Yo0(0,6)(1 3i) Y1-1(0,6) 2 Y21(0.0) Y20(0.) Find the normalization constant, N. (i) Find the probability to occupy state Yo0- (ii Find the expectation value of L2 of this state (iii Find the expectation value of L2 of this state (iv) Find (L2L2/21...
Question A2: Coherent states of the harmonic oscillator Consider a one-dimensional harmonic oscillator with the Hamiltonian 12 12 m2 H = -2m d. 2+ 2 Here m and w are the mass and frequency, respectively. Consider a time-dependent wave function of the form <(x,t) = C'exp (-a(x – 9(t)+ ik(t)z +io(t)), where a and C are positive constants, and g(t), k(t), and o(t) are real functions of time t. 1. Express C in terms of a. [2 marks] 2. By...
The Hamiltonian of a harmonic oscillator is: 2m 2 Show that: (1) [ł, î] =ihp () [f.h]=-ihmoʻx
2. Consider a particle of mass M attached to a rigid massless rod of fixed length R whose other end is fixed at the origin. The rod is free to rotate about its fixed point. (a) Give an argument why the Hamiltonian for the system may be written as 21 21 with/-MR2 (b) If the particle carries charge q, and the rotor is placed in a constant magnetic field B, what is the modified Hamiltonian? (e) What is the energy...
The wave function for a harmonic oscillator in its first excited state is Consider the harmonic oscillator with Hamiltonian and let H --hk and r-cr d. Evaluate E0) for the first excited state using perturbation theory 2m dx 2
The wave function for a harmonic oscillator in its first excited state is Consider the harmonic oscillator with Hamiltonian and let H --hk and r-cr d. Evaluate E0) for the first excited state using perturbation theory 2m dx 2
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