There is no need for a separate space time particle, all particles have a space and time component. These particles, free to move in a 3D volume, generate three space dimensions. Around each space dimension, a time dimension wraps tightly in a close spiral.
Does the volume contains the three space dimensions, or do the three space dimensions extend the volume?
The volume and the three space dimensions both describe the same entity.
If the time dimension, as one of the two orthogonal dimensions about which energy oscillates in a particle, is available us, then the other space dimension in the same oscillation should also be accessible. And as we measure \(E\), \(g\) and \(T\) field around the particle, we access this space dimension. Conceptually, the energy in these fields push a marker along a linear 1D scale de-marking a value indicative of the energy level in that field. When such a scale is located physically around a particle, we obtain an indication of the field around that particle, along the direction of the scale.
Is it possible that other dimensions exist, yet undetected? This is a different question from whether
other energies (energy pair) exist. Each such energy has an associated particle, a force field and an orthogonal oscillating energy that manifest itself when the particle goes into spin. This new particle is still in the old space time dimension framework. Whereas a new dimension would imply a new space time framework, not necessarily with new energy pair. (Such energy pairs are needed only for wave/particles to exist. Is free energy without a particle embodiment possible?)
Have a nice day.