Transition Definition and 496 Threads

Hello, How would you/or is it possible to combine two transitional probability matrices? Say for example I have 2 matrices that both measure the probability of moving from one state to another (the states are 1, 2 and 3) Here is a picture http://dl.dropbox.com/u/54057365/All/TPM1and2.JPG...

Is anyone familiar with this or heard of this concept before? It started in 1953 by a paper by Dicke published in peer reviewed Physical Review Journal called "Coherence in Spontaneous Radiation Processes" http://prola.aps.org/abstract/PR/v93/i1/p99_1 Then in 1973 Hepp and Lieb published...

I found this on a webpage: In any transition element series, the number of unpaired electrons first increases from 1 to 5 and then decreases back to the zero .The maximum five unpaired electrons occur at Cr WHY?' doesn't it occur at MN??

Hello, I am currently a second semester sophomore studying Mechanical Engineering thinking about studying Physics at the graduate level after my undergraduate degree is done. My main inquiry is regarding the transition from Mechanical Engineering to Physics. How hard is it exactly (if at all)...

Valence electrons of a transition element... Here is the electron config. for Iron (Fe) 1s2 2s2 2p6 3s2 3p6 4s2 3d6. I have two questions about this I've been on for hours... #1 Which subshell (4s or 3d) has the highest subshell? -You can say that the 3d has higher energy because you write...

I'm reading through Peskin&Schroeder, and they mention that the probability of transition from a state |\psi_0\rangle to a state |\psi_1\rangle is given by: \langle \psi_1|H|\psi_0\rangle where H is the Hamiltonian. Can someone please explain how this formula is derived? Thx

As I understand, a Markov chain transition matrix rewritten in its canonical form is a large matrix that can be separated into quadrants: a zero matrix, an identity matrix, a transient to absorbing matrix, and a transient to transient matrix. The zero matrix and identity matrix parts are easy...

Hi, I am not sure it is the right subcategory to post a question on statistical physics. But anyway, I read a couple of times that adding a m^3 to the Landau free energy implies that we may observe a first order transition phase, but I don't see why. Maybe it does imply some discontinuity in...

When transition metal start losing electrons they lose them from the s orbital before the d orbital. Why is this? The iron(II) ion has 24 electrons in this configuration: [Ar] 3d6 The neutral chromium atom also has 24 electrons, but in this configuration: [Ar] 3d5 4s1 I understand that...

Homework Statement A lifetime of the first excited state for some atom is τ, calculate natural line width for that line. The Attempt at a Solution Well, I could use energy-time uncertainty relation ΔE*Δt=h then ΔE*τ=h , now I can use a relation E=hc/λ to obitain Δλ=c*τ , which is...

How do radio waves carry the information? I mean the information is digital: 1 or 0, but what is 1 and what is 0 from perspective of radio waves?

I don't understand why the constructed fiber bundle E have g_{\alpha \beta} as its transition function. The problem is in the pdf file,thank you!

Homework Statement The J=0 to J=1 transition fro 12C16O carbon monoxide occurs at 1.153x105 MHz. Calculate the value of the bond length in CO. Homework Equations 2B = h/(4π2I) μ = m1*m2/(m1+m2) I = μr2 The Attempt at a Solution I = 6.61x10-34/ (4*π2*1.153x108) = 1.45x10-43...

The new Dell XPS Studio 9100 has arrived. It has been about 8 years since I have migrated to a new PC, new OS, etc, and I am out of practice. I am migrating from XP SP3 to Windows 7 Home Premium 64 bit, and I would like to be able to seamlessly integrate some old favorite apps into the new...

This is really a continuation from another thread but will start here from scratch. Consider the case of a static thin spherical mass shell - outer radius rb, inner radius ra, and (rb-ra)/ra<< 1, and with gravitational radius rs<< r(shell). According to majority opinion at least, in GR the...

Hi, I have completed an undergrad introductory PDEs course using the Strauss text and am now transitioning to graduate PDEs using the Evans text. Though the first parts of these texts treat (generally) the same subjects, there is a vast gap between them in terms of 'mathematical maturity.'...

Does anyone have any advice on transferring to a different engineering discipline? I currently have a BS/MS in nuclear engineering and I'm really growing to dislike it after a little more than 2 years in the workforce. How feasible is it to transition into another field such as electrical or...

Is it possible to use interband transition to design mid-infrared photodetector? I want to design mid-infrared photodetector based on interband transition. I could not find any article that use interband transition for mid-infrared photodetector.

Dear Members, I am strugling with calculations on rapid phase transition (RPT) of CO2 in a high pressure vessel. I looked everywhere, from isochoric data to ...you name it but can't get there... The question: What will the resultant pressure be when solid or liquid CO2 in area A contacts...

Hi - I have a question here for the board. Ten years ago I received my Bachelors degree in Industrial Manufacturing and Systems Engineering. Due to economic conditions at the time, I took a job as an analyst and before too long, realized that my career veered down the business path. I am...

Homework Statement a particle with mass=m is in a 1-D infinite square well of width a. The particle is initially in ground state. A delta function potential V1=k δ(x-a/2) is turned on at t= -t1 and turned off at t=t1. A measurement is made at t2, where t2>t1. What is the probability that the...

Homework Statement When an electron makes a transition from (n+1) state to nth state, the frequency of emitted radiations is related to n according to (n>>1): (a)v=\frac{2cRZ^2}{n^3} (b)v=\frac{cRZ^2}{n^4} (c)v=\frac{cRZ^2}{n^2} (a)v=\frac{2cRZ^2}{n^2} Homework Equations...

Hi all I'm just curious about what a switch like this one entail. Currently I'm 1 1/2 way through my education at a local community college. Here is a short background on where I stand on this Earth (not physically!). I just recently began to become motivated and interested in educating...

How do I find the energy difference between 1s and 2p, in a carbon atom? I'm right in assuming this is a constant value, and yet I cannot find the answer anywhere..? Thanks

I am intrigued by the idea of changing/dynamic transition probability matrix instead of the assumption of constant transition probability between states. For eg. Probability of population migrating between 2 states might not remain constant and can be a function of its population or some...

So i was doing my school work earlier and i had trouble wrapping my head around this particular topic, even though i was able to finish all of it correctly, i want to make sure it sinks it well so i once again decided to approach these forums :) We were naming Ionic compounds, specifically...

Hi there I have been stumped by this (probably simple) math transition in the attached file. Can someone please explain it in full detail? Big thanks http://postimage.org/image/11vseawf8/" << edit by berkeman to post the explicit URL >> http://postimage.org/image/11vseawf8

Hey folks, I have an orbit in the circular restricted three body problem with initial conditions [x(0), 0, z(0), 0, y'(0), 0] I'm following this paper http://adsabs.harvard.edu/full/1984CeMec..32...53H on how to correct these initial conditions given the state transition matrix at a...

Hi, I was listening to Susskind's lecture on statistical mechanics (lecture 8). He mentioned in relation to Ising model of magnetized spin systems that there could not be any phase transitions in one dimensions. He mentioned that it has to do with the stability of the system. Can anybody...

Hi, I'm currently enrolled in a university studying Mechanical Engineering (I'm one of the only girls in my classes). I like it, but I really would like to be doing Civil Engineering or Structural Engineering, but my college doesn't offer it. My advisor told me I could transition to Civil...

Homework Statement Prove the following theorem by induction: Let P be the transition matrix of a Markov chain. The ijth entry p(n)ij of the matrix Pn gives the probability that the Markov chain, starting in state si, will be in state sj after n steps. Homework Equations p(2)ij =...

Homework Statement 1) The position operator x has a continuous spectrum of engenvalues {x'} with corresponding eigenkets {|x'>}. Expand this state in terms of the position eigenstates. 2) Suppose the transition amplitudes c_a',b' = <a'|b'> are known where {|b'>} are the eigenstates of a...

Hi, could someone explain the following quote to me, please? It explains, why the Kohn-Sham-Scheme of DFT fails to describe transition states. My questions: If N_i ist the occupation number and the wavefunction may be given by \Psi = \sum_I{c_I \Phi_I} where \Phi_I are...

hi , I need to create a program on mathématica 8 to study the stability of my system using Floquet transition matrix . to compute the Floquet transition matrix I made this program based on a fourth order Runge Kutta integration : X1[t_] = {x1[t], x2[t], x3[t], x4[t], x5[t], x6[t] ...

Hi I'm reading some articles about atomic clocks and they say that they probe the clock transition. What does it mean 'to probe a transition'?

Neon has lowest excited energy at 1(s^2)2(s^2)2(p^5)3(s^1) state. And the excitation energy is about 16.9eV. And next energy is at 1(s^2)2(s^2)2(p^5)3(p^1) state. And the excitation energy is about 19eV. In Franck Hertz experiment with Neon, current decrease at every 19eV, no 17eV. Why...

Hello everyone. I am graduating high school in about a few days (yay!). I'm going to enter university this fall, majoring in math. I just want a few advice on what to do this summer to prepare myself for college mathematics. How can I prepare myself to tackle abstract math, without any prior...

\oint Bdl=\mu\int JdA+\mu\frac{{d}}{dt}\int EdA \int(curlB)dA=\mu\int divJdV+\mu\frac{{d}}{dt}\int divEdV how to go from the above integral equation to the bottom equation curlB=\mu\varepsilon\frac{{dE}}{dt}+\mu J

Transition from bound states to "continuous" states If I have the Hamiltonian for the Hydrogen atom and a perturbation given by a classical electric field (the kind of problems you get in an ordinary course about QM, no QFT involved), can I have a transition from a bound state (I intend a...

For my a levels, I think I need to know the colours of each oxidation state of the transition metals, from scandium to zinc. Is there any easy way to remember each one?

Imagine that I have a system that is described classically by a given Hamiltonian which is a function of a given set of parameters q and their canonical conjugate momenta p=\frac{\partial L}{\partial \dot{q}}. Then, I will say that the quantum description of the same system is guided by setting...

Is there anyone here who switched from physics to actuarial work? I am looking to get into the actuarial field, and I'm signed up to take exam P/1 next month. The material seems easy, no real worries about that (of course, I am still planning to study it as much as possible before the exam)...

I am having difficulty with this problem. I have solved all of the other ones and got them correct, but this one is stumpimg me. Transition A produces light with a wavelength of 400 nm. Transition B involves twice as much energy as A. What wavelenth light does it produce? Help please.

Hi, I have a doubt about the fine structure of the hydrogenic atoms. In the section 3.2 of the book Physics of Atoms and Molecules by Bransden & Joachain says: Since the electric dipole operator \mathbf{D} = -e\mathbf{r} does not depend on the spin, the selection rule derived in Chapter 4...

Take water for instance. It has a little vapor in liquid state. Today our professor explained boiling points and freezing points, but didn't go to molecular level, he only said that it needs more energy to actually boil water, or freeze it. Can u explain why more energy is needed to add to water...

As a hobby, I have been researching the different aspects of modeling the sounds produced by musical instruments. Particularly, I want to create as accurate a model as possible, and not something very simple (to which many may ask "why?" if complexity will reduce the likeliness of real time...

Can anyone tell me why poly(ethelyne glycol) has a higher Tg than polyethylene?

Homework Statement the critical field of an alloy at 12K and 14K is 12T and 8T. calculate the transition temperature of this alloy. Determine the critical field at 0K and 5K? Homework Equations Bc[/SUB]=Bo [1-(T/Tc)2] The Attempt at a Solution

I'm currently studying modern particle detectors, and was wondering whether someone on physicsforums could explain what transition radiation really is, and how exactly it is detected? My knowledge: - I've read that Cherenkov radiation is similar to transition radiation. - I understand how...

I'm trying to validate some experimental data on a NACA 643-418 wing section from XFoil. Below are some basis data, Number of panels around the airfoil - 43 Mach number - 0.0487 Reynold number - 1107872 Velocity - 16.67 (not important) During the analysis I have set the upper surface...