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a 1/4 1) Show that Wo is an eigenfunction of the harmonic oscillator Schrödinger equation. 1/2...
Quantum Chemistry. Thx in Advance! 1. For a harmonic oscillator with unit mass and unit frequency,...
Quantum Chemistry. Thx in Advance!
1. For a harmonic oscillator with unit mass and unit frequency, the Schrödinger equation for its eigenfunction is given by where n 0, 1, 2, . . .. Answer the following questions. Given a trial wave function, ?(x)-?000CnUn(x), where expression for the expectation value is is assumed to be real, the Prove that Eo2 h/2 2. Assume that the trial wave function for the ground state eigenfunction in Eq. (1) is ?(x) = cos Xx,...
-ax²12 directly into the Schroedinger equation, as broken down in the following steps. Show that the...
-ax²12 directly into the Schroedinger equation, as broken down in the following steps. Show that the energy of a simple harmonic oscillator in the n = 0 state is 1ho/2 by substituting the wave function wo = Ae First, calculate dvo/dx, using A, x, and a. dyo/dx = Second, calculate dvo/dx?, using A, x, and a. dyo/dx2 = Third, calculate a?x?wo-dayo/dx?, using A, x, and a. a3x240 - dạyo/dx? Fourth, calculate (a?x240-d2vo/dx2)/yo, using A, X, and a. (22x200-2vo/dx?)/- 1 Finally,...
Show that the energy of a simple harmonic oscillator in the n = 2 state is...
Show that the energy of a simple harmonic oscillator in the n = 2 state is 5ℏω/2 by substituting the wave functionψ2 = A(2αx2- 1)e-αx2/2 directly into the Schroedinger equation, as broken down in the following steps. First, calculate dψ2/dx, using A, x, and α. dψ2/dx = .......................... Second, calculate d2ψ2/dx2, using A, x, and α. d2ψ2/dx2 = ......................... Third, calculate α2x2ψ2 - d2ψ2/dx2, using A, x, and α. α2x2ψ2 - d2ψ2/dx2 = ....................... Fourth, calculate (α2x2ψ2 - d2ψ2/dx2)/ψ2, using...
Consider the harmonic oscillator wave function 1/4 where α = (-)"*. Here k, is the stiffness...
Consider the harmonic oscillator wave function 1/4 where α = (-)"*. Here k, is the stiffness coefficient of the oscillator and m is mass. Recall that the oscillation frequency iso,s:,k, / m In class we showed that Ψ0(x) Is an eigenfunction of the Hamiltonian, with an eigenvalue Eo (1/2)ha a) Normalize the wave function in Eq.(1) b) Graph the probability density. Note that a has units of length and measures the "width" of the wave function. It's easier to use...
First four harmonic oscillator normalized wavefunctions 1/4 Y.-(4)"-** 4, = 1/4 v2y ev2 1/4 Y, =|...
First four harmonic oscillator normalized wavefunctions 1/4 Y.-(4)"-** 4, = 1/4 v2y ev2 1/4 Y, =| -1)ev¾2 1/4 - 3y)e¬v³½ y =ax 1. Consider a harmonic oscillator with a = 1. a) Prove that these eigenstates are all orthonormal b) Plot the first four eigenstates. How would doubling the mass change the eigenfunctions? c) Pick one eigenstate, and show that it is a solution to the Schrodinger Equation, that is, show that V? on (x) + w²ma? ¢n (x) =...
+ Kx Show that the state (x) = e ax is an energy 8a. A Harmonic...
+ Kx Show that the state (x) = e ax is an energy 8a. A Harmonic oscillator has the Hamiltonian eigenstate, where xo = ". b. What is the energy eigenvalue for that state?
The lowest energy wavefunction of the quantum harmonic oscillator has the form (c) Determine σ an...
The lowest energy wavefunction of the quantum harmonic oscillator has the form (c) Determine σ and Eo (the energy of this lowest-energy wavefunction) by using the time-independent Schrödinger equation (H/Ho(x)- E/Ho(x) In Lecture 3, we found that the solution for a classical harmonic oscillator displaced from equilibrium by an amount o and released at rest was x(t)cos(wt) (d) Classically, what is the momentum of this harmonic oscillator as a function of time? (e) Show that 〈z) (expectation value of x)...
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 .
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...
A particle of mass m is bound by the spherically-symmetric three-dimensional harmonic- oscillator potential energy ,...
A particle of mass m is bound by the spherically-symmetric three-dimensional harmonic- oscillator potential energy , and ф are the usual spherical coordinates. (a) In the form given above, why is it clear that the potential energy function V) is (b) For this problem, it will be more convenient to express this spherically-symmetric where r , spherically symmetric? A brief answer is sufficient. potential energy in Cartesian coordinates x, y, and z as physically the same potential energy as the...
Quantum Chemistry. Thx in Advance!
1. For a harmonic oscillator with unit mass and unit frequency, the Schrödinger equation for its eigenfunction is given by where n 0, 1, 2, . . .. Answer the following questions. Given a trial wave function, ?(x)-?000CnUn(x), where expression for the expectation value is is assumed to be real, the Prove that Eo2 h/2 2. Assume that the trial wave function for the ground state eigenfunction in Eq. (1) is ?(x) = cos Xx,...
-ax²12 directly into the Schroedinger equation, as broken down in the following steps. Show that the energy of a simple harmonic oscillator in the n = 0 state is 1ho/2 by substituting the wave function wo = Ae First, calculate dvo/dx, using A, x, and a. dyo/dx = Second, calculate dvo/dx?, using A, x, and a. dyo/dx2 = Third, calculate a?x?wo-dayo/dx?, using A, x, and a. a3x240 - dạyo/dx? Fourth, calculate (a?x240-d2vo/dx2)/yo, using A, X, and a. (22x200-2vo/dx?)/- 1 Finally,...
Consider the harmonic oscillator wave function 1/4 where α = (-)"*. Here k, is the stiffness coefficient of the oscillator and m is mass. Recall that the oscillation frequency iso,s:,k, / m In class we showed that Ψ0(x) Is an eigenfunction of the Hamiltonian, with an eigenvalue Eo (1/2)ha a) Normalize the wave function in Eq.(1) b) Graph the probability density. Note that a has units of length and measures the "width" of the wave function. It's easier to use...
First four harmonic oscillator normalized wavefunctions 1/4 Y.-(4)"-** 4, = 1/4 v2y ev2 1/4 Y, =| -1)ev¾2 1/4 - 3y)e¬v³½ y =ax 1. Consider a harmonic oscillator with a = 1. a) Prove that these eigenstates are all orthonormal b) Plot the first four eigenstates. How would doubling the mass change the eigenfunctions? c) Pick one eigenstate, and show that it is a solution to the Schrodinger Equation, that is, show that V? on (x) + w²ma? ¢n (x) =...
+ Kx Show that the state (x) = e ax is an energy 8a. A Harmonic oscillator has the Hamiltonian eigenstate, where xo = ". b. What is the energy eigenvalue for that state?
The lowest energy wavefunction of the quantum harmonic oscillator has the form (c) Determine σ and Eo (the energy of this lowest-energy wavefunction) by using the time-independent Schrödinger equation (H/Ho(x)- E/Ho(x) In Lecture 3, we found that the solution for a classical harmonic oscillator displaced from equilibrium by an amount o and released at rest was x(t)cos(wt) (d) Classically, what is the momentum of this harmonic oscillator as a function of time? (e) Show that 〈z) (expectation value of x)...
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 .
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...
A particle of mass m is bound by the spherically-symmetric three-dimensional harmonic- oscillator potential energy , and ф are the usual spherical coordinates. (a) In the form given above, why is it clear that the potential energy function V) is (b) For this problem, it will be more convenient to express this spherically-symmetric where r , spherically symmetric? A brief answer is sufficient. potential energy in Cartesian coordinates x, y, and z as physically the same potential energy as the...
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