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Two pictures of quantum spacetimes...
The theory of quantum gravity (LQG) can perform calculations and predictions on the concrete structure of space and time at the Planck scale.
Equations formulas that describe possible quantum state of geometry of space and time.
The quantum states of the geometry of space and time are expressed in loop quantum gravity, in terms of loops. These states are the exact solution of the equations of quantum gravity, and where the cross leads to an infinite number of quantum states in loop: enabling an accurate description of the physics of the Planck scale at which space is constructed from bonds but there exist a set of discrete elementary objects, ie, inter-relationships defined space, which is expressed in a framework independent background. In the most important are the links and the topology of relationships, that is, how the loops interact, links to each other so as to give a description of the geometry of space and time at the Planck scale, so relational and dynamics. That is, a pure theory of loops that describe a real aspect of the universe in simple equations, which depends on the relations of the infinite ties together a theory of quantum gravity in loop (LQG).
The smallest possible area of an intersection is about 10 ^ -66 centimeter square and the smallest possible volume is about 10 ^ -99 cubic of square.
The nodes of spin networks has one meaning: they correspond to a quantized units of volume in which its structure is space.
Events of space and time are the processes by which show how to change. The transition from quantum geometry of space, so a spin network can evolve over time, discrete and not continuous, ie, causal relationships between events, so you have light cones, but it have something that matches the moments time.
So the image of space-time determined by loop quantum gravity agrees with the fundamental principle that there is not things but processes.
Computer simulations of a universe with one space and one dimension of time - many are small universes, each edge corresponds to a Planck length, in which time to time the size of the universe suddenly jumps, ie, quantum fluctuations of geometry space -time. Each event in space-time is a simple change in geometry of space, that is, according to loop quantum gravity (LQG), or space-time considered the time scale of 10 ^ -43 of a second and a scale length of 10 ^ -33 of an inch: single elementary move.
Is the theory of loop quantum gravity (LQG) right? We do not know ... will be decided through experiments designed to test the area and volume and other measures of space-time geometry, but their forecasts do not limit what else is there in the universe, how many extra dimensions there are and the fundamental symmetries (supersymmetry).
Experience: way to test the Planck scale - the Method - using the entire universe as an instrument in order to find out experimentally the structure of 'atomic' space-time through the interference effect arising when waves associated with the photon that are spread by we discrete quantum geometry. Therefore, by detecting the photon, which to travel long distances accumulate effects (interference). And we can not detect the photon that has traveled large fraction of the observable universe? This requires carefully studying the images taken from X-ray and gamma-ray bursts in order to discover experimentally the discrete structure of space-time. That is, try to space-time has an atomic structure on the scale of Planck - will be a good discovery!
UNO
Two pictures of quantum spacetimes...
The theory of quantum gravity (LQG) can perform calculations and predictions on the concrete structure of space and time at the Planck scale.
Equations formulas that describe possible quantum state of geometry of space and time.
The quantum states of the geometry of space and time are expressed in loop quantum gravity, in terms of loops. These states are the exact solution of the equations of quantum gravity, and where the cross leads to an infinite number of quantum states in loop: enabling an accurate description of the physics of the Planck scale at which space is constructed from bonds but there exist a set of discrete elementary objects, ie, inter-relationships defined space, which is expressed in a framework independent background. In the most important are the links and the topology of relationships, that is, how the loops interact, links to each other so as to give a description of the geometry of space and time at the Planck scale, so relational and dynamics. That is, a pure theory of loops that describe a real aspect of the universe in simple equations, which depends on the relations of the infinite ties together a theory of quantum gravity in loop (LQG).
The smallest possible area of an intersection is about 10 ^ -66 centimeter square and the smallest possible volume is about 10 ^ -99 cubic of square.
The nodes of spin networks has one meaning: they correspond to a quantized units of volume in which its structure is space.
Events of space and time are the processes by which show how to change. The transition from quantum geometry of space, so a spin network can evolve over time, discrete and not continuous, ie, causal relationships between events, so you have light cones, but it have something that matches the moments time.
So the image of space-time determined by loop quantum gravity agrees with the fundamental principle that there is not things but processes.
Computer simulations of a universe with one space and one dimension of time - many are small universes, each edge corresponds to a Planck length, in which time to time the size of the universe suddenly jumps, ie, quantum fluctuations of geometry space -time. Each event in space-time is a simple change in geometry of space, that is, according to loop quantum gravity (LQG), or space-time considered the time scale of 10 ^ -43 of a second and a scale length of 10 ^ -33 of an inch: single elementary move.
Is the theory of loop quantum gravity (LQG) right? We do not know ... will be decided through experiments designed to test the area and volume and other measures of space-time geometry, but their forecasts do not limit what else is there in the universe, how many extra dimensions there are and the fundamental symmetries (supersymmetry).
Experience: way to test the Planck scale - the Method - using the entire universe as an instrument in order to find out experimentally the structure of 'atomic' space-time through the interference effect arising when waves associated with the photon that are spread by we discrete quantum geometry. Therefore, by detecting the photon, which to travel long distances accumulate effects (interference). And we can not detect the photon that has traveled large fraction of the observable universe? This requires carefully studying the images taken from X-ray and gamma-ray bursts in order to discover experimentally the discrete structure of space-time. That is, try to space-time has an atomic structure on the scale of Planck - will be a good discovery!
UNO
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