2026-09-06
Geometric origin of energy and time uncertainty from phase splitting
Why can't a state with a precisely defined energy be localized in time, while a short wave event inevitably contains a certain range of energies? In standard quantum mechanics, the answer is expressed by the uncertainty principle \(\Delta E\,\Delta t\geqslant\hbar/2\). However, the formula itself does not yet reveal what geometric arrangement of the state creates the energy spectrum and why its width is related to the duration of phase consistency.
This paper proposes to relate these quantities to multilevel idempotent splitting. The splitting creates orthogonal phase channels, the random relative phase generates a spread in the phase-sensitive projection energy, and the different rotation speeds of the energy components limit the time of their co-localization. After precisely determining the energy and time widths, it will be shown that their product cannot be less than \(\hbar/2\), with the lower bound achieved only by a Gaussian wavelet with consistent relative phases.
This work relies on the unified concept of Wave Electricity, the construction of deep idempotent splitting, and the study of random and coupled phases. Here, these concepts are combined into a single, consistent construction.
1. Scope of the result
The quantity \(\Delta t\) hereafter denotes neither the uncertainty of the external clock readings nor the spectrum of an individual self-adjoint time operator. It is defined as the root-mean-square duration of a normalized time packet: a pulse, a registration event, or a phase localization interval. Therefore, the relation being proven is a spectral-temporal inequality for two Fourier-conjugate representations of a single wave state.
An approximate estimate of \(\Delta E\,\Delta t\sim\hbar\) is obtained from the condition of a phase divergence of approximately one radian. The coefficient \(1/2\) requires a more rigorous definition of variances and the application of the Cauchy-Bunyakovsky inequality.
It is also necessary to distinguish between the total energy of a closed state and the energy of an individual observable projection. The total energy is conserved. Its projection onto a selected output channel or the result of a single measurement can be random.
2. Phase Operator and Random Initial Phase
The ground state of the model is defined by a normalized operator
\[\tag{1} J(a,b)=\j^{a}(-\j)^{b} =\ep e^{i\pi b}+\em e^{i\pi a}, \qquad J\overline J=1. \] Parameter \(a\) describes the internal phase state, and parameter \(b\) describes the external motion:
\[\tag{2} a(t)=\varpi t, \qquad \omega_{\mathrm{int}}=\pi\varpi, \qquad \beta=\sin(\pi b)=\frac{v}{c}. \] If the initial position of the internal wave is not known in advance, a random addition \(\phi\) is introduced:
\[\tag{3} J_{\phi}(a,b)=J(a+\phi,b) =\ep e^{i\pi b}+\em e^{i\pi(a+\phi)}. \] The physical random phase angle is \(\pi\phi\). For a uniform distribution over a full cycle,
\[\tag{4} \phi\sim U(0,2), \qquad \left\langle e^{i\pi\phi}\right\rangle=0. \] The static random addition \(\phi\) does not change the intrinsic frequency, since \(d\phi/dt=0\). Therefore, the uncertainty of the initial phase alone does not create uncertainty in the energy. For the phase to manifest itself in the energy distribution, the two branches must be projected onto a common phase-sensitive channel.
3. First level of energy splitting
Let two idempotent branches be associated with orthonormal metric states \(|+\rangle\) and \(|-\rangle\):
\[\tag{5} \langle+|+\rangle=\langle-|-\rangle=1, \qquad \langle+|-\rangle=0. \] The external phase defines two real projections
\[\tag{6} \cos(\pi b)=\sqrt{1-\beta^{2}}, \qquad \sin(\pi b)=\beta. \] We use them as the amplitudes of the two daughter branches, and the random internal phase as their relative phase:
\[\tag{7} |\psi\rangle =\sqrt{1-\beta^{2}}\,|+\rangle +\beta e^{i\Delta}|-\rangle, \qquad \Delta=\pi(a+\phi-b). \] The state is normalized:
\[\tag{8} \langle\psi|\psi\rangle =(1-\beta^{2})+\beta^{2}=1. \] Formula (7) is the connecting postulate. Idempotent algebra creates orthogonal branches, but the mapping of \(\cos(\pi b)\) and \(\sin(\pi b)\) onto the amplitudes of the child energy channels must be taken separately.
4. Why Reprojection Is Necessary
With direct observationWhen the branches \(|+\rangle\) and \(|-\rangle\) are separated, their weights are \(1-\beta^2\) and \(\beta^2\). The relative phase \(\Delta\) disappears from these quantities. Therefore, random phase cannot change the energy of two already separated orthogonal channels.
The phase becomes observable when the branches are again projected onto a common basis:
\[\tag{9} |u\rangle=\frac{|+\rangle+|-\rangle}{\sqrt2}, \qquad |v\rangle=\frac{|+\rangle-|-\rangle}{\sqrt2}. \] The amplitudes of the two outputs are equal
\[\tag{10} \langle u|\psi\rangle =\frac{\sqrt{1-\beta^{2}}+\beta e^{i\Delta}}{\sqrt2}, \qquad \langle v|\psi\rangle =\frac{\sqrt{1-\beta^{2}}-\beta e^{i\Delta}}{\sqrt2}. \] Let the total energy of this splitting be \(\varepsilon\), and the projection energy be proportional to the square of its amplitude. Then
\[\tag{11} E_u(\Delta)=\varepsilon|\langle u|\psi\rangle|^{2} =\frac{\varepsilon}{2} +\varepsilon\beta\sqrt{1-\beta^{2}}\cos\Delta, \] \[\tag{12} E_v(\Delta)=\varepsilon|\langle v|\psi\rangle|^{2} =\frac{\varepsilon}{2} -\varepsilon\beta\sqrt{1-\beta^{2}}\cos\Delta. \] For any value of the random phase, the conservation law holds:
\[\tag{13} \boxed{E_u(\Delta)+E_v(\Delta)=\varepsilon.} \] Therefore, the random phase does not change the total energy. It redistributes the energy between two complementary projections of a single split state.
5. Energy distribution created by a single random phase
Let's denote the amplitude of the energy deviation
\[\tag{14} A=\varepsilon\beta\sqrt{1-\beta^{2}}. \] Then the energy of the first output is given by
\[\tag{15} E_u=\frac{\varepsilon}{2}+A\cos\Delta. \] If \(\phi\) is uniformly distributed, then \(\Delta\) is also uniform over the entire cycle. The standard replacement of the random variable yields the exact energy density:
\[\tag{16} f_1(E)= \frac{1}{\pi\sqrt{A^{2}-\left(E-\varepsilon/2\right)^{2}}}, \qquad \left|E-\frac{\varepsilon}{2}\right| < A. \] This is an arcsine distribution, not a normal one. Its mean and variance are equal.
\[\tag{17} \langle E_u\rangle=\frac{\varepsilon}{2}, \qquad (\Delta E_1)^2=\frac{A^2}{2} =\frac{\varepsilon^{2}}{2}\beta^{2}(1-\beta^{2}). \] A single uniformly random phase does not create a Gaussian energy spectrum. The normal distribution arises as the limit of the sum of a large number of independent phase contributions.
6. Multilevel splitting and the Gaussian limit
At each deep level, we define idempotents
\[\tag{18} p_r^{+}=\frac{1+\j_r}{2}, \qquad p_r^{-}=\frac{1-\j_r}{2}, \qquad p_r^{+}p_r^{-}=0. \] Let the \(r\)th level contribute energy \(\varepsilon_r\), characterized by parameter \(\beta_r\) and relative phase \(\Delta_r\). The energy of the selected phase-sensitive projection is
\[\tag{19} E_r=\frac{\varepsilon_r}{2}+A_r\cos\Delta_r, \qquad A_r=\varepsilon_r\beta_r\sqrt{1-\beta_r^{2}}. \] The total projection energy of several levels:
\[\tag{20} E=\sum_{r=1}^{N}E_r =\frac12\sum_{r=1}^{N}\varepsilon_r +\sum_{r=1}^{N}A_r\cos\Delta_r. \] If the phases \(\Delta_r\) are independent and uniform, then
\[\tag{21} \langle\cos\Delta_r\rangle=0, \qquad \langle\cos^{2}\Delta_r\rangle=\frac12, \qquad \langle\cos\Delta_r\cos\Delta_s\rangle=0\quad(r\ne s). \] Therefore, the mean energy and variance are equal
\[\tag{22} \overline E=\frac12\sum_{r=1}^{N}\varepsilon_r, \qquad (\Delta E)^2 =\frac12\sum_{r=1}^{N} \varepsilon_r^{2}\beta_r^{2}(1-\beta_r^{2}). \] The exact distribution for finite \(N\) is the convolution of arcsine distributions. Its characteristic function has the form
\[\tag{23} \Phi_E(q)= \exp\!\left(iq\overline E\right) \prod_{r=1}^{N}J_0(qA_r), \] where \(J_0\) is the zeroth-order Bessel function. If no single level determines the entire variance, then the condition is satisfied
\[\tag{24} \frac{\max_r A_r^2}{\sum_{s=1}^{N}A_s^2} \longrightarrow0, \] central preThe theorem leads to a normal distribution:
\[\tag{25} P(E)\approx \frac{1}{\sqrt{2\pi}\,\Delta E} \exp\!\left[ -\frac{(E-\overline E)^2}{2(\Delta E)^2} \right]. \] Thus, splitting creates independent channels, random phases create random phase-sensitive contributions, and the summation of a large number of such contributions creates a Gaussian energy profile.
7. From Energy Distribution to Energy Amplitude
The density \(P(E)\) does not yet contain complete information about the wave state. A complex energy amplitude must be entered. \[\tag{26} \widetilde\psi(E)=\sqrt{P(E)}\,e^{i\chi(E)}, \qquad \int_{-\infty}^{\infty}|\widetilde\psi(E)|^2dE=1. \]
The \(\chi(E)\) function defines the relative phases of the already formed energy components. It should not be confused with the microscopic phases \(\Delta_r\), which create a statistical spread in the projection energy. The former determines the temporal shape of the resulting packet; The latter participate in the formation of its energy distribution.
Since physical energy is positive, integration over the entire real axis should be understood as integration over the centered deviation \(E-\overline E\). For a narrow spectrum with \(\overline E\gg\Delta E\), the contribution of the formally negative region is negligible.
8. Energy as the Velocity of Phase Rotation
Each energy component develops with its own angular frequency:
\[\tag{27} \omega(E)=\frac{E}{\hbar}, \qquad e^{-i\omega t}=e^{-iEt/\hbar}. \] Therefore, the time packet is formed by the superposition of all energy channels:
\[\tag{28} \boxed{ \psi(t)= \frac{1}{\sqrt{2\pi\hbar}} \int_{-\infty}^{\infty} \widetilde\psi(E)e^{-iEt/\hbar}\,dE. } \] The inverse transform is
\[\tag{29} \widetilde\psi(E)= \frac{1}{\sqrt{2\pi\hbar}} \int_{-\infty}^{\infty} \psi(t)e^{iEt/\hbar}\,dt. \] Formulas (28)–(29) show that the energy distribution and the time profile are two Fourier conjugate representations of a single state.
9. Precise definitions of uncertainties
Normalize the time packet:
\[\tag{30} \int_{-\infty}^{\infty}|\psi(t)|^2dt=1. \] Its mean time and root-mean-square duration:
\[\tag{31} \langle t\rangle =\int_{-\infty}^{\infty}t|\psi(t)|^2dt, \qquad (\Delta t)^2 =\int_{-\infty}^{\infty} (t-\langle t\rangle)^2|\psi(t)|^2dt. \] For energy distribution
\[\tag{32} \langle E\rangle =\int_{-\infty}^{\infty}E|\widetilde\psi(E)|^2dE, \qquad (\Delta E)^2 =\int_{-\infty}^{\infty} (E-\langle E\rangle)^2|\widetilde\psi(E)|^2dE. \] Translating the origin and isolating the average phase frequency allows us to set without loss of generality
\[\tag{33} \langle t\rangle=0, \qquad \langle E\rangle=0. \] 10. Rigorous Proof
From Fourier's formulas and Parseval's equality it follows
\[\tag{34} (\Delta E)^2 =\hbar^2 \int_{-\infty}^{\infty} \left|\frac{d\psi}{dt}\right|^2dt. \] Suppose the packet disappears sufficiently quickly as \(|t|\to\infty\), so that \(t|\psi(t)|^2\to0\). Then
\[\tag{35} 0= \int_{-\infty}^{\infty} \frac{d}{dt}\left[t|\psi(t)|^2\right]dt. \] Expanding the derivative and using normalization (30), we obtain
\[\tag{36} 1+2\operatorname{Re} \int_{-\infty}^{\infty} t\psi^*(t)\frac{d\psi}{dt}\,dt=0. \] Therefore,
\[\tag{37} \left| \int_{-\infty}^{\infty} t\psi^*(t)\frac{d\psi}{dt}\,dt \right| \geqslant\frac12. \] Apply the Cauchy-Bunyakovsky inequality to the functions \(t\psi(t)\) and \(d\psi/dt\):
\[\tag{38} \left( \int t^2|\psi|^2dt \right) \left( \int\left|\frac{d\psi}{dt}\right|^2dt \right) \geqslant \left| \int t\psi^*\frac{d\psi}{dt}\,dt \right|^2 \geqslant\frac14. \] The first factor is \((\Delta t)^2\), and the second, according to (34), is \((\Delta E)^2/\hbar^2\). Therefore
\[\tag{39} (\Delta t)^2\frac{(\Delta E)^2}{\hbar^2} \geqslant\frac14. \] Finally, we obtain
\[\tag{40} \boxed{ \Delta E\,\Delta t \geqslant\frac{\hbar}{2}. } \] Thus, the exact boundary arises not from the approximate phase divergence condition, but from the normalization of one state and the Fourier conjugacy of its energy and time representations.
11. The Minimal Gaussian State
Equality in formula (38) is possible only when the two functions are proportional:
\[\tag{41} \frac{d\psi}{dt}=-\lambda t\psi, \qquad \lambda>0. \] The solution is a Gaussian packet. After reconstructing the mean values and the common phase, it has the form
\[\tag{42} \psi(t)= \frac{1}{(2\pi\Delta t^2)^{1/4}} \exp\!\left[ -\frac{(t-t_0)^2}{4\Delta t^2} \right] e^{-iE_0t/\hbar}e^{i\phi_0}. \] Its energy distribution is also Gaussian:
\[\tag{43} |\widetilde\psi(E)|^2 =\frac{1}{\sqrt{2\pi}\,\Delta E} \exp\!\left[ -\frac{(E-E_0)^2}{2(\Delta E)^2} \right]. \] For this state
\[\tag{44} \boxed{ \Delta E\,\Delta t=\frac{\hbar}{2}. } \] Therefore, the normal distribution has a special meaning: it corresponds to the only packet shape that achieves the minimum admissible product of two widths.
12. General and Relative Random Phases
We write the energy amplitude as
\[\tag{45} \widetilde\psi(E)=\sqrt{P(E)}e^{i\chi(E)}. \] The general random phase \(\phi_0\), which is the same for all energy components, does not affect the distributions:
\[\tag{46} \widetilde\psi(E)\longrightarrow e^{i\phi_0}\widetilde\psi(E). \] Linear spectral phase
\[\tag{47} \chi(E)=\chi_0+\frac{Et_0}{\hbar} \] only moves the packet in time and also does not increase \(\Delta t\). Therefore, the minimal state allows for an unknown common phase, but requires consistency in the relative phases of the energy branches.
For an arbitrary sufficiently smooth \(\chi(E)\), the time variance is decomposed into two parts:
\[\tag{48} (\Delta t)^2 =\hbar^2 \int_{-\infty}^{\infty} \left(\frac{d\sqrt{P}}{dE}\right)^2dE +\hbar^2\operatorname{Var}_{P} \!\left(\frac{d\chi}{dE}\right). \] For a Gaussian distribution, the first term is \(\hbar^2/[4(\Delta E)^2]\), so
\[\tag{49} (\Delta E)^2(\Delta t)^2 =\frac{\hbar^2}{4} +\hbar^2(\Delta E)^2 \operatorname{Var}_{P} \!\left(\frac{d\chi}{dE}\right). \] Phase misalignment produces a non-negative additive effect. Therefore, the randomness of the relative spectral phases cannot violate the lower bound, but can only increase the temporal width:
\[\tag{50} \operatorname{Var}_{P}\!\left(\frac{d\chi}{dE}\right)>0 \quad\Longrightarrow\quad \Delta E\,\Delta t>\frac{\hbar}{2}. \] 13. Physical Meaning of the Result
Splitting distributes the state across several energy channels. Each energy corresponds to a natural frequency (\omega=E/\hbar\). Therefore, the energy spread is also a phase velocity spread:
\[\tag{51} \Delta\omega=\frac{\Delta E}{\hbar}. \] Over time \(t\), the characteristic phase misalignment becomes of the order of
\[\tag{52} \Delta\Theta(t)\sim\Delta\omega\,t =\frac{\Delta E}{\hbar}t. \] The wider the energy distribution, the faster the components lose their shared phase localization. Formula (40) establishes the precise minimum scale of this process.
The geometric meaning of the uncertainty principle is as follows: the more widely a state is distributed across the energy splitting channels, the shorter the minimum interval in which these channels can form a single phase-localized packet.
14. What follows from the construction, and what is additionally adopted?
For a correct interpretation, it is necessary to separate mathematical consequences from physical assumptions.
From idempotent geometry follow: the existence of orthogonal channels, norm conservation, and the possibility of multilevel splitting.
From the previously adopted dynamics follow: the relation \(\beta=\sin(\pi b)\), internal phase evolution, and the possibility of an unknown initial phase \(a+\phi\).
Additionally adopted: the mapping of channels onto energies via \(\widehat H|\boldsymbol\xi_n\rangle=E_n|\boldsymbol\xi_n\rangle\), the quadratic rule for projection energy, and additivity contributions of different levels and phase-sensitive branch mixing.
The following are rigorously derived after these definitions: the arcsine distribution for a single uniform phase, the Gaussian limit for the sum of independent phase contributions, and the Fourier bound \(\Delta E\,\Delta t\geqslant\hbar/2\).
Therefore, the inequality itself is not a new mathematical result. The new content of the model is the geometric interpretation of the origin of energy channels, random energy distribution, and phase consistency of the minimal packet.
Conclusions
The normalized operator \(J(a,b)\) contains internal and external phase components. Deep idempotent splitting continues this withThe structure is transformed into a system of orthogonal channels, which, after introducing the energy mapping, are assigned different energies.
The unknown constant phase itself does not change the energy. It acquires an energetic value only in the phase-sensitive projection, which combines the two split branches. For a single uniformly random phase, the projection energy has an arcsine distribution. The sum of a large number of independent phase contributions, under general conditions, approximates a normal distribution.
Each energy component rotates with a frequency of \(E/\hbar\). Therefore, the energy amplitude and the time packet are related by a Fourier transform. State normalization and the Cauchy-Bunyakovsky inequality yield a tight bound. \[\tag{53} \boxed{ \Delta E\,\Delta t \geqslant\frac{\hbar}{2}. } \]
Equality is achieved for a Gaussian energy distribution only with a consistent linear relative phase. The overall phase of the entire state can remain random, without changing the widths. In contrast, random relative phases of the energy branches increase \(\Delta t\) and move the system from minimal equality to strict inequality.
Thus, splitting creates energetic possibilities, random microscopic phases shape the statistical energy profile, and the consistency of the relative phases determines how close a state can approach the fundamental boundary \(\hbar/2\).

