What is The Charge of a String?

[Arthur d. S. Jr.]

In String Theory, strings are loops of pure energy. But is it positivelly charged, negatively? How do we calculate that? And what would happen if a positively charged string colided with another? 

 

Thanks,

Arthur

[swansont]

If they are indeed pure energy, how can they have any of these other properties, like charge? They wouldn't be "pure" anymore.

14 minutes ago, Arthur d. S. Jr. said:

How do we calculate that?

The answer involves several years of graduate school.

[Vmedvil]

37 minutes ago, swansont said:

If they are indeed pure energy, how can they have any of these other properties, like charge? They wouldn't be "pure" anymore.

The answer involves several years of graduate school.

Well, they are just pushing into another direction upon movement that is not change space a direction which we feel and define  as charge and yes calculating that requires many math skills.

Edited November 28, 2017 by Vmedvil

[swansont]

37 minutes ago, Vmedvil said:

Well, they are just pushing into another direction upon movement that is not change space  direction which well feel and define  as charge  

Can you translate this into something intelligible?

[Vmedvil]

3 minutes ago, swansont said:

Can you translate this into something intelligible?

Vibrates another direction that is not (x,y,z), you know how gravity pushes into hyperspace this pushes into "Subspace" the other forces.

Edited November 28, 2017 by Vmedvil

[swansont]

1 minute ago, Vmedvil said:

Vibrates another direction that is not (x,y,z)

Which has what, exactly, to do with my post?

[Vmedvil]

2 minutes ago, swansont said:

Which has what, exactly, to do with my post?

Grabbed the wrong post post or  I mistook your meaning of "intelligible" 

Edited November 28, 2017 by Vmedvil

[Sensei]

Universe is made of quantum particles. Some particles have property such as rest-mass, which multiplied by c^2, can be converted (unit conversion) to potential energy of particle. That energy can be used for something, if particle will collide with its antiparticle (annihilation). If particle has charge Q= -1e = -1.602176565*10^-19 C (sometimes -1.6021766*10^-19 C in newer measurements, as its refined with time) then its antiparticle must have opposite charge  Q=+1e = +1.602176565*10^-19 C (+1.6021766*10^-19 C). Annihilation does not mean total destruction like in sci-fi movies. It means that initial particle and antiparticle are destroyed and new bunch of particles are created instead.

f.e. annihilation of electron-positron:

[math]e^- + e^+ \rightarrow \gamma + \gamma + 1.022 MeV[/math]

rest-mass of electron is m_e=510998.928 eV/c^2

rest-mass of positron (antiparticle of electron) is the same as electron m_e.

After annihilation there are created two gamma photons, each with E=510998.928 eV.

You can see that energy prior annihilation is equal to energy after annihilation. Charge of particles prior annihilation is equal to charge after annihilation.

Photon energy equation (Planck equation) is E=hv (in English written E=hf (because f is abbreviation of frequency) ).

We can covert it to frequency equation f=E/h = 510998.928 eV / 4.135667*10^-15 eV*s = 1.23559*10^20 Hz

It's called Compton frequency fc = 1.23559*10^20 Hz

 

Edited November 28, 2017 by Sensei

[Vmedvil]

30 minutes ago, Sensei said:

Universe is made of quantum particles. Some particles have property such as rest-mass, which multiplied by c^2, can be converted (unit conversion) to potential energy of particle. That energy can be used for something, if particle will collide with its antiparticle (annihilation). If particle has charge Q= -1e = -1.602176565*10^-19 C (sometimes -1.6021766*10^-19 C in newer measurements, as its refined with time) then its antiparticle must have opposite charge  Q=+1e = +1.602176565*10^-19 C (+1.6021766*10^-19 C). Annihilation does not mean total destruction like in sci-fi movies. It means that initial particle and antiparticle are destroyed and new bunch of particles are created instead.

f.e. annihilation of electron-positron:

e−+e+→γ+γ+1.022MeV

rest-mass of electron is m_e=510998.928 eV/c^2

rest-mass of positron (antiparticle of electron) is the same as electron m_e.

After annihilation there are created two gamma photons, each with E=510998.928 eV.

You can see that energy prior annihilation is equal to energy after annihilation. Charge of particles prior annihilation is equal to charge after annihilation.

Photon energy equation (Planck equation) is E=hv (in English written E=hf (because f is abbreviation of frequency) ).

We can covert it to frequency equation f=E/h = 510998.928 eV / 4.135667*10^-15 eV*s = 1.23559*10^20 Hz

It's called Compton frequency fc = 1.23559*10^20 Hz

 

Ya, basically but in strings it is defined like this which the Dirac Propagator is like saying Movement in direction in QM and QFT, with a probability of happening.

Edited November 28, 2017 by Vmedvil

[swansont]

40 minutes ago, Vmedvil said:

Ya, basically but in strings it is defined like this which the Dirac Propagator is like saying Movement in direction in QM and QFT, with a probability of happening.

"Propagator" does not automatically mean movement. That's an equation for a Lagrangian. H is the Hamiltonian. That's all about energy.

[Vmedvil]

7 minutes ago, swansont said:

"Propagator" does not automatically mean movement. That's an equation for a Lagrangian. H is the Hamiltonian. That's all about energy.

I know it is a Lagrangian its a string.  Lagrangian is a function of the generalized coordinates, their time derivatives, and time, and contains the information about the dynamics of the system

Edited November 28, 2017 by Vmedvil

[Arthur d. S. Jr.]

Quote

Universe is made of quantum particles. Some particles have property such as rest-mass, which multiplied by c^2, can be converted (unit conversion) to potential energy of particle. That energy can be used for something, if particle will collide with its antiparticle (annihilation). If particle has charge Q= -1e = -1.602176565*10^-19 C (sometimes -1.6021766*10^-19 C in newer measurements, as its refined with time) then its antiparticle must have opposite charge  Q=+1e = +1.602176565*10^-19 C (+1.6021766*10^-19 C). Annihilation does not mean total destruction like in sci-fi movies. It means that initial particle and antiparticle are destroyed and new bunch of particles are created instead.

f.e. annihilation of electron-positron:

e−+e+→γ+γ+1.022MeV

rest-mass of electron is m_e=510998.928 eV/c^2

rest-mass of positron (antiparticle of electron) is the same as electron m_e.

After annihilation there are created two gamma photons, each with E=510998.928 eV.

You can see that energy prior annihilation is equal to energy after annihilation. Charge of particles prior annihilation is equal to charge after annihilation.

Photon energy equation (Planck equation) is E=hv (in English written E=hf (because f is abbreviation of frequency) ).

We can covert it to frequency equation f=E/h = 510998.928 eV / 4.135667*10^-15 eV*s = 1.23559*10^20 Hz

It's called Compton frequency fc = 1.23559*10^20 Hz

By annihilation, you mean, for example: If all the strings that vibrate on a body from Unverse, say, X, have negative charge, and all the strings of a body from the Universe Y are positive. A Strings would head towards B strings by the powers of eletro magnetism, when they collided, energy release happens and as consequence, explosion?

[Vmedvil]

Exactly, but the energy is released as light particles called photons being neutral as charges cancel. 

Edited November 29, 2017 by Vmedvil

[Arthur d. S. Jr.]

Photons? So It's not harmful to nearby objects? Just light?

And after that none of the A or B bodies exist anymore, at least only in light?

Correct?

[Sensei]

4 hours ago, Arthur d. S. Jr. said:

Photons? So It's not harmful to nearby objects? Just light?

Photons have different energies (momentum/frequency/wavelength)..

High energy photon can destroy nucleus, can destroy atom, split it to free protons, free neutrons,

can cause destruction of molecule, etc. etc.

Gamma photon from annihilation of electron-positron pair,

has 510998.928 eV energy,

visible light green photon has 2.32 eV,

that's > 220,000.0 (>220 thousands) more energy than middle of visible spectrum..

To start ionizing matter, you just need slightly above 3.2-3.5 eV, UV photon..

Gamma photon can destroy millions of molecules, prior it will be fully absorbed.

 

Edited November 29, 2017 by Sensei